41 files changed, 120 insertions, 94 deletions
diff --git a/AGENTS/ARCH.md b/AGENTS/ARCH.md
index e551c8f..cb2e6a3 100644
--- a/AGENTS/ARCH.md
+++ b/AGENTS/ARCH.md
@@ -117,7 +117,7 @@ timestamp (`yyyy-mm-dd-hh-mm-ss`) followed by its short ID. Git is only required
 for packaging; recipients can install the extracted archive using just the script.
 
 The Windows `install.ps1` installs `cpsc.exe`, `doc/cpsc.html` and
-`doc/language/*.html` for the current user under `%LOCALAPPDATA%\Programs\cpsc` (or `-Prefix`). It appends that directory
+`doc/language/**/*.html` for the current user under `%LOCALAPPDATA%\Programs\cpsc` (or `-Prefix`). It appends that directory
 to the user PATH without copying the combined process PATH, and creates a
 per-user Start Menu help shortcut. `-SourceDir` selects the artifact directory;
 `DESTDIR` staging is unsupported on Windows. The script is compatible with
@@ -125,8 +125,8 @@ Windows PowerShell 5.1; its Windows actions have only been reviewed statically.
 The `doc` target uses CMake's `WIN32` target-platform detection: Windows generates
 standalone HTML with inline styles at `build/doc/cpsc.html`; other platforms
 generate `build/doc/cpsc.1`. The section 1 source is `doc/cpsc.1.md`; section 7 sources are
-`doc/language/cpsc-*.7.md`. `doc` builds every page, preserving the language
-subdirectory, as `.7` on Unix or `.html` on Windows. Sources are discovered with
+`doc/language/**/*.7.md`. `doc` builds every page, preserving the language
+category subdirectories, as `.7` on Unix or `.html` on Windows. Sources are discovered with
 CONFIGURE_DEPENDS; per-page commands regenerate only changed pages.
 `cmake/ManualLinks.lua` renders cross-references as man names or local HTML links.
 Windows `mingw32-make -C build install` builds the HTML manual and invokes
@@ -135,7 +135,7 @@ Windows `mingw32-make -C build install` builds the HTML manual and invokes
 directory above; explicit prefixes are preserved. Unix still invokes `install.sh`.
 The release target explicitly passes the configured Windows flag to
 `cmake/Release.cmake`, since a standalone CMake script otherwise describes the
-host platform. Windows packages `cpsc.exe`, `doc/cpsc.html`, `doc/language/*.html`, `install.ps1` and
+host platform. Windows packages `cpsc.exe`, `doc/cpsc.html`, `doc/language/**/*.html`, `install.ps1` and
 `LICENSE` as `build/cpsc-VERSION-Windows-ARCH.zip` using CMake's default Deflate
 compression. Unix retains `.tar.xz`, the POSIX installer and the man pages.
 Linux smoke tests can configure an isolated build with `-DWIN32=TRUE` to exercise
@@ -183,8 +183,9 @@ they are pure data with virtual destructors only — no codegen/visitor methods.
 ## Language manuals
 
 `doc/cpsc.1.md` documents the command-line interface. Short language manuals live
-in `doc/language/` as `cpsc-keyword-NAME.7.md`, `cpsc-function-NAME.7.md`, and
-`cpsc-language-overview.7.md`; filenames are lowercase and preserve underscores.
+in `doc/language/keyword/` as `cpsc-keyword-NAME.7.md` and
+`doc/language/function/` as `cpsc-function-NAME.7.md`; the overview remains
+`doc/language/cpsc-language-overview.7.md`. Filenames are lowercase and preserve underscores.
 Document auxiliary/closing keywords with the main construct, not in separate
 pages. Keep examples small and describe actual compiler support, noting relevant
 differences from the 2026 Cambridge guide in `reference/`. All project text is
diff --git a/cmake/Manual.cmake b/cmake/Manual.cmake
index 689c91e..17a8e77 100644
--- a/cmake/Manual.cmake
+++ b/cmake/Manual.cmake
@@ -6,7 +6,7 @@ endif()
 
 configure_file("${CMAKE_CURRENT_LIST_DIR}/GenerateManual.cmake.in"
     "${CMAKE_CURRENT_BINARY_DIR}/GenerateManual.cmake" @ONLY)
-file(GLOB cpsc_language_sources CONFIGURE_DEPENDS
+file(GLOB_RECURSE cpsc_language_sources CONFIGURE_DEPENDS
     "${CMAKE_CURRENT_SOURCE_DIR}/doc/language/cpsc-*.7.md")
 set(cpsc_manual_sources "${CMAKE_CURRENT_SOURCE_DIR}/doc/cpsc.1.md"
     ${cpsc_language_sources})
diff --git a/cmake/Release.cmake b/cmake/Release.cmake
index 59a1d79..66c2e2b 100644
--- a/cmake/Release.cmake
+++ b/cmake/Release.cmake
@@ -21,7 +21,7 @@ if(CPSC_WINDOWS)
     set(cpsc_binary_name cpsc.exe)
     set(cpsc_installer install.ps1)
     set(cpsc_manual cpsc.html)
-    set(cpsc_language_pattern "${CPSC_BINARY_DIR}/doc/language/cpsc-*.html")
+    set(cpsc_language_extension html)
     set(cpsc_tar_flags cf)
     set(cpsc_archive_format zip)
 else()
@@ -29,7 +29,7 @@ else()
     set(cpsc_binary_name cpsc)
     set(cpsc_installer install.sh)
     set(cpsc_manual cpsc.1)
-    set(cpsc_language_pattern "${CPSC_BINARY_DIR}/doc/language/cpsc-*.7")
+    set(cpsc_language_extension 7)
     set(cpsc_tar_flags cJf)
     set(cpsc_archive_format gnutar)
 endif()
@@ -40,11 +40,18 @@ configure_file("${CPSC_EXECUTABLE}" "${cpsc_package_dir}/${cpsc_binary_name}" CO
 file(COPY "${CPSC_SOURCE_DIR}/${cpsc_installer}" "${CPSC_SOURCE_DIR}/LICENSE"
     DESTINATION "${cpsc_package_dir}")
 file(COPY "${CPSC_BINARY_DIR}/doc/${cpsc_manual}" DESTINATION "${cpsc_package_dir}/doc")
-file(GLOB cpsc_language_manuals "${cpsc_language_pattern}")
-if(NOT cpsc_language_manuals)
-    message(FATAL_ERROR "Language manuals are missing; build the doc target first")
+# Package the current source set, preserving categories and ignoring stale outputs.
+file(GLOB_RECURSE cpsc_language_sources "${CPSC_SOURCE_DIR}/doc/language/cpsc-*.7.md")
+if(NOT cpsc_language_sources)
+    message(FATAL_ERROR "Language manual sources are missing")
 endif()
-file(COPY ${cpsc_language_manuals} DESTINATION "${cpsc_package_dir}/doc/language")
+foreach(source IN LISTS cpsc_language_sources)
+    file(RELATIVE_PATH relative "${CPSC_SOURCE_DIR}/doc/language" "${source}")
+    string(REGEX REPLACE "\\.7\\.md$" ".${cpsc_language_extension}" relative "${relative}")
+    get_filename_component(directory "${relative}" DIRECTORY)
+    file(COPY "${CPSC_BINARY_DIR}/doc/language/${relative}"
+        DESTINATION "${cpsc_package_dir}/doc/language/${directory}")
+endforeach()
 execute_process(
     COMMAND "${CMAKE_COMMAND}" -E tar "${cpsc_tar_flags}" "${cpsc_archive}"
         "--format=${cpsc_archive_format}" "${cpsc_package_name}"
diff --git a/doc/build.md b/doc/build.md
index ee335fd..4942859 100644
--- a/doc/build.md
+++ b/doc/build.md
@@ -225,13 +225,13 @@ cmake --build build --target doc
 ```
 
 CMake selects local Pandoc first, sets its local runtime/data paths as needed,
-and falls back to Pandoc in the system PATH. The outputs are `build/doc/cpsc.1` and `build/doc/language/*.7` on Unix,
-or `build/doc/cpsc.html` and `build/doc/language/*.html` on Windows. Each page
+and falls back to Pandoc in the system PATH. The outputs are `build/doc/cpsc.1` and `build/doc/language/**/*.7` on Unix,
+or `build/doc/cpsc.html` and `build/doc/language/**/*.html` on Windows. Each page
 is regenerated when its source, rendering configuration or downloaded packages
 change. New language pages are discovered automatically during the build.
 
 On Unix, open the command manual with `man ./build/doc/cpsc.1`, or a syntax
-page with `man ./build/doc/language/cpsc-keyword-if.7`. On Windows, open the standalone,
+page with `man ./build/doc/language/keyword/cpsc-keyword-if.7`. On Windows, open the standalone,
 offline HTML from PowerShell:
 
 ```powershell
diff --git a/doc/install.md b/doc/install.md
index 9fe660a..d91b059 100644
--- a/doc/install.md
+++ b/doc/install.md
@@ -78,7 +78,7 @@ make -C build release
 The output is `build/cpsc-VERSION-SYSTEM-ARCH.tar.xz`. `VERSION` uses HEAD's commit
 time in UTC followed by its short ID: `yyyy-mm-dd-hh-mm-ss-commit`.
 The version is read each time packaging runs. The package uses the current build's
-execution mode and contains `cpsc`, `doc/cpsc.1`, `doc/language/*.7`, `install.sh` and `LICENSE`.
+execution mode and contains `cpsc`, `doc/cpsc.1`, `doc/language/**/*.7`, `install.sh` and `LICENSE`.
 Packaging builds the compiler and manual automatically; it requires Git and Pandoc.
 Use `EMBEDDED` when recipients should not need LLVM or `lli` at run time.
 
@@ -106,7 +106,7 @@ prefix is preserved. To change it, run
 
 You can also call `install.ps1` directly. It installs for the current user without
 administrator rights. Its source directory must contain `cpsc.exe`,
-`doc/cpsc.html` and `doc/language/*.html`:
+`doc/cpsc.html` and `doc/language/**/*.html`:
 
 ```powershell
 powershell.exe -NoProfile -ExecutionPolicy Bypass -File .\install.ps1 -SourceDir .\build
@@ -114,6 +114,7 @@ powershell.exe -NoProfile -ExecutionPolicy Bypass -File .\install.ps1 -SourceDir
 
 The default destination is `%LOCALAPPDATA%\Programs\cpsc`: `cpsc.exe` goes in
 that directory, the command manual goes in `doc`, and syntax manuals go in
+`doc/language/function` and `doc/language/keyword`; the overview stays in
 `doc/language`. The command manual links to the language overview and its pages.
 The installer adds the directory to the user PATH and creates Start Menu > cpsc > cpsc Help,
 which opens the manual in the default browser. Open a new terminal afterward;
@@ -134,7 +135,7 @@ cmake --build build --target release
 This is equivalent to `mingw32-make -C build release`. Windows produces
 `build/cpsc-VERSION-Windows-ARCH.zip`, using the same UTC commit version as Unix
 and retaining the configured execution mode. The ZIP contains `cpsc.exe`,
-`doc/cpsc.html`, `doc/language/*.html`, `install.ps1` and `LICENSE` under one top-level directory.
+`doc/cpsc.html`, `doc/language/**/*.html`, `install.ps1` and `LICENSE` under one top-level directory.
 It uses CMake's default Deflate compression and needs no additional compression
 tool; packaging requires Git and Pandoc, just as on Unix.
 
diff --git a/doc/language/cpsc-language-overview.7.md b/doc/language/cpsc-language-overview.7.md
index 8adf362..7005fa0 100644
--- a/doc/language/cpsc-language-overview.7.md
+++ b/doc/language/cpsc-language-overview.7.md
@@ -29,27 +29,27 @@ TYPE for records/enumerations/pointers, and CLASS for public/private fields.
 
 # KEYWORDS
 
-- [cpsc-keyword-declare(7)](cpsc-keyword-declare.7.md): declare variables and arrays.
-- [cpsc-keyword-input(7)](cpsc-keyword-input.7.md): read a value from standard input.
-- [cpsc-keyword-output(7)](cpsc-keyword-output.7.md): print values to standard output.
-- [cpsc-keyword-if(7)](cpsc-keyword-if.7.md): choose between branches.
-- [cpsc-keyword-while(7)](cpsc-keyword-while.7.md): repeat while a condition is true.
-- [cpsc-keyword-repeat(7)](cpsc-keyword-repeat.7.md): repeat until a condition is true.
-- [cpsc-keyword-for(7)](cpsc-keyword-for.7.md): iterate over an integer range.
-- [cpsc-keyword-function(7)](cpsc-keyword-function.7.md): define a function that returns a value.
-- [cpsc-keyword-procedure(7)](cpsc-keyword-procedure.7.md): define a procedure and parameter modes.
-- [cpsc-keyword-call(7)](cpsc-keyword-call.7.md): invoke a procedure.
-- [cpsc-keyword-openfile(7)](cpsc-keyword-openfile.7.md): open a text file.
-- [cpsc-keyword-readfile(7)](cpsc-keyword-readfile.7.md): read a line from a text file.
-- [cpsc-keyword-writefile(7)](cpsc-keyword-writefile.7.md): write a line to a text file.
-- [cpsc-keyword-closefile(7)](cpsc-keyword-closefile.7.md): close a text file.
-- [cpsc-keyword-type(7)](cpsc-keyword-type.7.md): define enumerations, pointers, and records.
-- [cpsc-keyword-class(7)](cpsc-keyword-class.7.md): define a class with public and private fields.
-- [cpsc-keyword-and(7)](cpsc-keyword-and.7.md): combine conditions with logical AND.
-- [cpsc-keyword-or(7)](cpsc-keyword-or.7.md): combine conditions with logical OR.
-- [cpsc-keyword-not(7)](cpsc-keyword-not.7.md): negate a condition.
-- [cpsc-keyword-div(7)](cpsc-keyword-div.7.md): perform integer division.
-- [cpsc-keyword-mod(7)](cpsc-keyword-mod.7.md): find the integer division remainder.
+- [cpsc-keyword-declare(7)](keyword/cpsc-keyword-declare.7.md): declare variables and arrays.
+- [cpsc-keyword-input(7)](keyword/cpsc-keyword-input.7.md): read a value from standard input.
+- [cpsc-keyword-output(7)](keyword/cpsc-keyword-output.7.md): print values to standard output.
+- [cpsc-keyword-if(7)](keyword/cpsc-keyword-if.7.md): choose between branches.
+- [cpsc-keyword-while(7)](keyword/cpsc-keyword-while.7.md): repeat while a condition is true.
+- [cpsc-keyword-repeat(7)](keyword/cpsc-keyword-repeat.7.md): repeat until a condition is true.
+- [cpsc-keyword-for(7)](keyword/cpsc-keyword-for.7.md): iterate over an integer range.
+- [cpsc-keyword-function(7)](keyword/cpsc-keyword-function.7.md): define a function that returns a value.
+- [cpsc-keyword-procedure(7)](keyword/cpsc-keyword-procedure.7.md): define a procedure and parameter modes.
+- [cpsc-keyword-call(7)](keyword/cpsc-keyword-call.7.md): invoke a procedure.
+- [cpsc-keyword-openfile(7)](keyword/cpsc-keyword-openfile.7.md): open a text file.
+- [cpsc-keyword-readfile(7)](keyword/cpsc-keyword-readfile.7.md): read a line from a text file.
+- [cpsc-keyword-writefile(7)](keyword/cpsc-keyword-writefile.7.md): write a line to a text file.
+- [cpsc-keyword-closefile(7)](keyword/cpsc-keyword-closefile.7.md): close a text file.
+- [cpsc-keyword-type(7)](keyword/cpsc-keyword-type.7.md): define enumerations, pointers, and records.
+- [cpsc-keyword-class(7)](keyword/cpsc-keyword-class.7.md): define a class with public and private fields.
+- [cpsc-keyword-and(7)](keyword/cpsc-keyword-and.7.md): combine conditions with logical AND.
+- [cpsc-keyword-or(7)](keyword/cpsc-keyword-or.7.md): combine conditions with logical OR.
+- [cpsc-keyword-not(7)](keyword/cpsc-keyword-not.7.md): negate a condition.
+- [cpsc-keyword-div(7)](keyword/cpsc-keyword-div.7.md): perform integer division.
+- [cpsc-keyword-mod(7)](keyword/cpsc-keyword-mod.7.md): find the integer division remainder.
 
 Closing and auxiliary keywords are documented with their main constructs:
 THEN/ELSE/ENDIF with IF; DO/ENDWHILE with WHILE; UNTIL with REPEAT;
@@ -61,18 +61,18 @@ TRUE/FALSE are BOOLEAN literals.
 
 # BUILT-IN FUNCTIONS
 
-- [cpsc-function-length(7)](cpsc-function-length.7.md): find a string's length.
-- [cpsc-function-mid(7)](cpsc-function-mid.7.md): extract part of a string.
-- [cpsc-function-left(7)](cpsc-function-left.7.md): extract the beginning of a string.
-- [cpsc-function-right(7)](cpsc-function-right.7.md): extract the end of a string.
-- [cpsc-function-lcase(7)](cpsc-function-lcase.7.md): convert text to lower case.
-- [cpsc-function-ucase(7)](cpsc-function-ucase.7.md): convert text to upper case.
-- [cpsc-function-asc(7)](cpsc-function-asc.7.md): find a character's byte code.
-- [cpsc-function-chr(7)](cpsc-function-chr.7.md): convert a byte code to text.
-- [cpsc-function-is_num(7)](cpsc-function-is_num.7.md): test whether text represents a number.
-- [cpsc-function-num_to_str(7)](cpsc-function-num_to_str.7.md): convert a number to text.
-- [cpsc-function-str_to_num(7)](cpsc-function-str_to_num.7.md): convert text to a real number.
-- [cpsc-function-eof(7)](cpsc-function-eof.7.md): test for the end of a text file.
+- [cpsc-function-length(7)](function/cpsc-function-length.7.md): find a string's length.
+- [cpsc-function-mid(7)](function/cpsc-function-mid.7.md): extract part of a string.
+- [cpsc-function-left(7)](function/cpsc-function-left.7.md): extract the beginning of a string.
+- [cpsc-function-right(7)](function/cpsc-function-right.7.md): extract the end of a string.
+- [cpsc-function-lcase(7)](function/cpsc-function-lcase.7.md): convert text to lower case.
+- [cpsc-function-ucase(7)](function/cpsc-function-ucase.7.md): convert text to upper case.
+- [cpsc-function-asc(7)](function/cpsc-function-asc.7.md): find a character's byte code.
+- [cpsc-function-chr(7)](function/cpsc-function-chr.7.md): convert a byte code to text.
+- [cpsc-function-is_num(7)](function/cpsc-function-is_num.7.md): test whether text represents a number.
+- [cpsc-function-num_to_str(7)](function/cpsc-function-num_to_str.7.md): convert a number to text.
+- [cpsc-function-str_to_num(7)](function/cpsc-function-str_to_num.7.md): convert text to a real number.
+- [cpsc-function-eof(7)](function/cpsc-function-eof.7.md): test for the end of a text file.
 
 # UNSUPPORTED FEATURES
 
diff --git a/doc/language/cpsc-function-asc.7.md b/doc/language/function/cpsc-function-asc.7.md
index 0600599..72403a7 100644
--- a/doc/language/cpsc-function-asc.7.md
+++ b/doc/language/function/cpsc-function-asc.7.md
@@ -24,5 +24,5 @@ OUTPUT ASC('A')
 
 # SEE ALSO
 
-[cpsc-language-overview(7)](cpsc-language-overview.7.md), [cpsc-function-chr(7)](cpsc-function-chr.7.md).
+[cpsc-language-overview(7)](../cpsc-language-overview.7.md), [cpsc-function-chr(7)](cpsc-function-chr.7.md).
 
diff --git a/doc/language/cpsc-function-chr.7.md b/doc/language/function/cpsc-function-chr.7.md
index 5062468..59b3121 100644
--- a/doc/language/cpsc-function-chr.7.md
+++ b/doc/language/function/cpsc-function-chr.7.md
@@ -24,5 +24,5 @@ OUTPUT CHR(65)
 
 # SEE ALSO
 
-[cpsc-language-overview(7)](cpsc-language-overview.7.md), [cpsc-function-asc(7)](cpsc-function-asc.7.md).
+[cpsc-language-overview(7)](../cpsc-language-overview.7.md), [cpsc-function-asc(7)](cpsc-function-asc.7.md).
 
diff --git a/doc/language/cpsc-function-eof.7.md b/doc/language/function/cpsc-function-eof.7.md
index 721e667..3ab2d31 100644
--- a/doc/language/cpsc-function-eof.7.md
+++ b/doc/language/function/cpsc-function-eof.7.md
@@ -30,5 +30,5 @@ CLOSEFILE "notes.txt"
 
 # SEE ALSO
 
-[cpsc-language-overview(7)](cpsc-language-overview.7.md), [cpsc-keyword-openfile(7)](cpsc-keyword-openfile.7.md), [cpsc-keyword-readfile(7)](cpsc-keyword-readfile.7.md), [cpsc-keyword-closefile(7)](cpsc-keyword-closefile.7.md).
+[cpsc-language-overview(7)](../cpsc-language-overview.7.md), [cpsc-keyword-openfile(7)](../keyword/cpsc-keyword-openfile.7.md), [cpsc-keyword-readfile(7)](../keyword/cpsc-keyword-readfile.7.md), [cpsc-keyword-closefile(7)](../keyword/cpsc-keyword-closefile.7.md).
 
diff --git a/doc/language/cpsc-function-is_num.7.md b/doc/language/function/cpsc-function-is_num.7.md
index de37b71..a85acfe 100644
--- a/doc/language/cpsc-function-is_num.7.md
+++ b/doc/language/function/cpsc-function-is_num.7.md
@@ -24,5 +24,5 @@ OUTPUT IS_NUM("12.5")
 
 # SEE ALSO
 
-[cpsc-language-overview(7)](cpsc-language-overview.7.md), [cpsc-function-str_to_num(7)](cpsc-function-str_to_num.7.md).
+[cpsc-language-overview(7)](../cpsc-language-overview.7.md), [cpsc-function-str_to_num(7)](cpsc-function-str_to_num.7.md).
 
diff --git a/doc/language/cpsc-function-lcase.7.md b/doc/language/function/cpsc-function-lcase.7.md
index f6ca334..c8c7db9 100644
--- a/doc/language/cpsc-function-lcase.7.md
+++ b/doc/language/function/cpsc-function-lcase.7.md
@@ -24,5 +24,5 @@ OUTPUT LCASE("HELLO")
 
 # SEE ALSO
 
-[cpsc-language-overview(7)](cpsc-language-overview.7.md), [cpsc-function-ucase(7)](cpsc-function-ucase.7.md).
+[cpsc-language-overview(7)](../cpsc-language-overview.7.md), [cpsc-function-ucase(7)](cpsc-function-ucase.7.md).
 
diff --git a/doc/language/cpsc-function-left.7.md b/doc/language/function/cpsc-function-left.7.md
index b4542d6..38a703e 100644
--- a/doc/language/cpsc-function-left.7.md
+++ b/doc/language/function/cpsc-function-left.7.md
@@ -23,5 +23,5 @@ OUTPUT LEFT("Hello", 2)
 
 # SEE ALSO
 
-[cpsc-language-overview(7)](cpsc-language-overview.7.md), [cpsc-function-right(7)](cpsc-function-right.7.md), [cpsc-function-mid(7)](cpsc-function-mid.7.md).
+[cpsc-language-overview(7)](../cpsc-language-overview.7.md), [cpsc-function-right(7)](cpsc-function-right.7.md), [cpsc-function-mid(7)](cpsc-function-mid.7.md).
 
diff --git a/doc/language/cpsc-function-length.7.md b/doc/language/function/cpsc-function-length.7.md
index a7f6acf..9730798 100644
--- a/doc/language/cpsc-function-length.7.md
+++ b/doc/language/function/cpsc-function-length.7.md
@@ -23,5 +23,5 @@ OUTPUT LENGTH("Hello")
 
 # SEE ALSO
 
-[cpsc-language-overview(7)](cpsc-language-overview.7.md), [cpsc-function-mid(7)](cpsc-function-mid.7.md), [cpsc-function-left(7)](cpsc-function-left.7.md), [cpsc-function-right(7)](cpsc-function-right.7.md).
+[cpsc-language-overview(7)](../cpsc-language-overview.7.md), [cpsc-function-mid(7)](cpsc-function-mid.7.md), [cpsc-function-left(7)](cpsc-function-left.7.md), [cpsc-function-right(7)](cpsc-function-right.7.md).
 
diff --git a/doc/language/cpsc-function-mid.7.md b/doc/language/function/cpsc-function-mid.7.md
index 3a6bc71..66f7294 100644
--- a/doc/language/cpsc-function-mid.7.md
+++ b/doc/language/function/cpsc-function-mid.7.md
@@ -24,5 +24,5 @@ OUTPUT MID("ABCDEFGH", 2, 3)
 
 # SEE ALSO
 
-[cpsc-language-overview(7)](cpsc-language-overview.7.md), [cpsc-function-left(7)](cpsc-function-left.7.md), [cpsc-function-right(7)](cpsc-function-right.7.md), [cpsc-function-length(7)](cpsc-function-length.7.md).
+[cpsc-language-overview(7)](../cpsc-language-overview.7.md), [cpsc-function-left(7)](cpsc-function-left.7.md), [cpsc-function-right(7)](cpsc-function-right.7.md), [cpsc-function-length(7)](cpsc-function-length.7.md).
 
diff --git a/doc/language/cpsc-function-num_to_str.7.md b/doc/language/function/cpsc-function-num_to_str.7.md
index 30dc39b..fb4f6fc 100644
--- a/doc/language/cpsc-function-num_to_str.7.md
+++ b/doc/language/function/cpsc-function-num_to_str.7.md
@@ -23,5 +23,5 @@ OUTPUT NUM_TO_STR(42), " ", NUM_TO_STR(3.5)
 
 # SEE ALSO
 
-[cpsc-language-overview(7)](cpsc-language-overview.7.md), [cpsc-function-str_to_num(7)](cpsc-function-str_to_num.7.md).
+[cpsc-language-overview(7)](../cpsc-language-overview.7.md), [cpsc-function-str_to_num(7)](cpsc-function-str_to_num.7.md).
 
diff --git a/doc/language/cpsc-function-right.7.md b/doc/language/function/cpsc-function-right.7.md
index ae9114b..9aa10e6 100644
--- a/doc/language/cpsc-function-right.7.md
+++ b/doc/language/function/cpsc-function-right.7.md
@@ -23,5 +23,5 @@ OUTPUT RIGHT("Hello", 2)
 
 # SEE ALSO
 
-[cpsc-language-overview(7)](cpsc-language-overview.7.md), [cpsc-function-left(7)](cpsc-function-left.7.md), [cpsc-function-mid(7)](cpsc-function-mid.7.md).
+[cpsc-language-overview(7)](../cpsc-language-overview.7.md), [cpsc-function-left(7)](cpsc-function-left.7.md), [cpsc-function-mid(7)](cpsc-function-mid.7.md).
 
diff --git a/doc/language/cpsc-function-str_to_num.7.md b/doc/language/function/cpsc-function-str_to_num.7.md
index 6128a13..341b757 100644
--- a/doc/language/cpsc-function-str_to_num.7.md
+++ b/doc/language/function/cpsc-function-str_to_num.7.md
@@ -24,5 +24,5 @@ OUTPUT STR_TO_NUM("12.5")
 
 # SEE ALSO
 
-[cpsc-language-overview(7)](cpsc-language-overview.7.md), [cpsc-function-is_num(7)](cpsc-function-is_num.7.md), [cpsc-function-num_to_str(7)](cpsc-function-num_to_str.7.md).
+[cpsc-language-overview(7)](../cpsc-language-overview.7.md), [cpsc-function-is_num(7)](cpsc-function-is_num.7.md), [cpsc-function-num_to_str(7)](cpsc-function-num_to_str.7.md).
 
diff --git a/doc/language/cpsc-function-ucase.7.md b/doc/language/function/cpsc-function-ucase.7.md
index dd44892..6356f48 100644
--- a/doc/language/cpsc-function-ucase.7.md
+++ b/doc/language/function/cpsc-function-ucase.7.md
@@ -24,5 +24,5 @@ OUTPUT UCASE("Hello")
 
 # SEE ALSO
 
-[cpsc-language-overview(7)](cpsc-language-overview.7.md), [cpsc-function-lcase(7)](cpsc-function-lcase.7.md).
+[cpsc-language-overview(7)](../cpsc-language-overview.7.md), [cpsc-function-lcase(7)](cpsc-function-lcase.7.md).
 
diff --git a/doc/language/cpsc-keyword-and.7.md b/doc/language/keyword/cpsc-keyword-and.7.md
index 6b98abf..8df8c56 100644
--- a/doc/language/cpsc-keyword-and.7.md
+++ b/doc/language/keyword/cpsc-keyword-and.7.md
@@ -24,5 +24,5 @@ OUTPUT (3 > 2) AND (4 > 1)
 
 # SEE ALSO
 
-[cpsc-language-overview(7)](cpsc-language-overview.7.md), [cpsc-keyword-or(7)](cpsc-keyword-or.7.md), [cpsc-keyword-not(7)](cpsc-keyword-not.7.md), [cpsc-keyword-if(7)](cpsc-keyword-if.7.md).
+[cpsc-language-overview(7)](../cpsc-language-overview.7.md), [cpsc-keyword-or(7)](cpsc-keyword-or.7.md), [cpsc-keyword-not(7)](cpsc-keyword-not.7.md), [cpsc-keyword-if(7)](cpsc-keyword-if.7.md).
 
diff --git a/doc/language/cpsc-keyword-call.7.md b/doc/language/keyword/cpsc-keyword-call.7.md
index b17b3f4..e999a8b 100644
--- a/doc/language/cpsc-keyword-call.7.md
+++ b/doc/language/keyword/cpsc-keyword-call.7.md
@@ -27,5 +27,5 @@ CALL Hello()
 
 # SEE ALSO
 
-[cpsc-language-overview(7)](cpsc-language-overview.7.md), [cpsc-keyword-procedure(7)](cpsc-keyword-procedure.7.md), [cpsc-keyword-function(7)](cpsc-keyword-function.7.md).
+[cpsc-language-overview(7)](../cpsc-language-overview.7.md), [cpsc-keyword-procedure(7)](cpsc-keyword-procedure.7.md), [cpsc-keyword-function(7)](cpsc-keyword-function.7.md).
 
diff --git a/doc/language/cpsc-keyword-class.7.md b/doc/language/keyword/cpsc-keyword-class.7.md
index 7ff32ba..d7ec12f 100644
--- a/doc/language/cpsc-keyword-class.7.md
+++ b/doc/language/keyword/cpsc-keyword-class.7.md
@@ -39,5 +39,5 @@ OUTPUT PersonValue.Name
 
 # SEE ALSO
 
-[cpsc-language-overview(7)](cpsc-language-overview.7.md), [cpsc-keyword-type(7)](cpsc-keyword-type.7.md), [cpsc-keyword-declare(7)](cpsc-keyword-declare.7.md).
+[cpsc-language-overview(7)](../cpsc-language-overview.7.md), [cpsc-keyword-type(7)](cpsc-keyword-type.7.md), [cpsc-keyword-declare(7)](cpsc-keyword-declare.7.md).
 
diff --git a/doc/language/cpsc-keyword-closefile.7.md b/doc/language/keyword/cpsc-keyword-closefile.7.md
index b986b86..381ae56 100644
--- a/doc/language/cpsc-keyword-closefile.7.md
+++ b/doc/language/keyword/cpsc-keyword-closefile.7.md
@@ -25,5 +25,5 @@ CLOSEFILE "notes.txt"
 
 # SEE ALSO
 
-[cpsc-language-overview(7)](cpsc-language-overview.7.md), [cpsc-keyword-openfile(7)](cpsc-keyword-openfile.7.md), [cpsc-keyword-readfile(7)](cpsc-keyword-readfile.7.md), [cpsc-keyword-writefile(7)](cpsc-keyword-writefile.7.md).
+[cpsc-language-overview(7)](../cpsc-language-overview.7.md), [cpsc-keyword-openfile(7)](cpsc-keyword-openfile.7.md), [cpsc-keyword-readfile(7)](cpsc-keyword-readfile.7.md), [cpsc-keyword-writefile(7)](cpsc-keyword-writefile.7.md).
 
diff --git a/doc/language/cpsc-keyword-declare.7.md b/doc/language/keyword/cpsc-keyword-declare.7.md
index 887ae12..7fe1cf6 100644
--- a/doc/language/cpsc-keyword-declare.7.md
+++ b/doc/language/keyword/cpsc-keyword-declare.7.md
@@ -36,5 +36,5 @@ OUTPUT Names[Count]
 
 # SEE ALSO
 
-[cpsc-language-overview(7)](cpsc-language-overview.7.md), [cpsc-keyword-type(7)](cpsc-keyword-type.7.md), [cpsc-keyword-class(7)](cpsc-keyword-class.7.md), [cpsc-keyword-output(7)](cpsc-keyword-output.7.md).
+[cpsc-language-overview(7)](../cpsc-language-overview.7.md), [cpsc-keyword-type(7)](cpsc-keyword-type.7.md), [cpsc-keyword-class(7)](cpsc-keyword-class.7.md), [cpsc-keyword-output(7)](cpsc-keyword-output.7.md).
 
diff --git a/doc/language/cpsc-keyword-div.7.md b/doc/language/keyword/cpsc-keyword-div.7.md
index 78715e1..6adb23d 100644
--- a/doc/language/cpsc-keyword-div.7.md
+++ b/doc/language/keyword/cpsc-keyword-div.7.md
@@ -24,5 +24,5 @@ OUTPUT 7 DIV 2
 
 # SEE ALSO
 
-[cpsc-language-overview(7)](cpsc-language-overview.7.md), [cpsc-keyword-mod(7)](cpsc-keyword-mod.7.md).
+[cpsc-language-overview(7)](../cpsc-language-overview.7.md), [cpsc-keyword-mod(7)](cpsc-keyword-mod.7.md).
 
diff --git a/doc/language/cpsc-keyword-for.7.md b/doc/language/keyword/cpsc-keyword-for.7.md
index 201a492..57b5632 100644
--- a/doc/language/cpsc-keyword-for.7.md
+++ b/doc/language/keyword/cpsc-keyword-for.7.md
@@ -31,5 +31,5 @@ NEXT Index
 
 # SEE ALSO
 
-[cpsc-language-overview(7)](cpsc-language-overview.7.md), [cpsc-keyword-declare(7)](cpsc-keyword-declare.7.md), [cpsc-keyword-while(7)](cpsc-keyword-while.7.md).
+[cpsc-language-overview(7)](../cpsc-language-overview.7.md), [cpsc-keyword-declare(7)](cpsc-keyword-declare.7.md), [cpsc-keyword-while(7)](cpsc-keyword-while.7.md).
 
diff --git a/doc/language/cpsc-keyword-function.7.md b/doc/language/keyword/cpsc-keyword-function.7.md
index c37754c..d687ba9 100644
--- a/doc/language/cpsc-keyword-function.7.md
+++ b/doc/language/keyword/cpsc-keyword-function.7.md
@@ -37,5 +37,5 @@ OUTPUT Double(4)
 
 # SEE ALSO
 
-[cpsc-language-overview(7)](cpsc-language-overview.7.md), [cpsc-keyword-procedure(7)](cpsc-keyword-procedure.7.md), [cpsc-keyword-call(7)](cpsc-keyword-call.7.md).
+[cpsc-language-overview(7)](../cpsc-language-overview.7.md), [cpsc-keyword-procedure(7)](cpsc-keyword-procedure.7.md), [cpsc-keyword-call(7)](cpsc-keyword-call.7.md).
 
diff --git a/doc/language/cpsc-keyword-if.7.md b/doc/language/keyword/cpsc-keyword-if.7.md
index 9f14959..a934922 100644
--- a/doc/language/cpsc-keyword-if.7.md
+++ b/doc/language/keyword/cpsc-keyword-if.7.md
@@ -31,5 +31,5 @@ ENDIF
 
 # SEE ALSO
 
-[cpsc-language-overview(7)](cpsc-language-overview.7.md), [cpsc-keyword-and(7)](cpsc-keyword-and.7.md), [cpsc-keyword-or(7)](cpsc-keyword-or.7.md), [cpsc-keyword-not(7)](cpsc-keyword-not.7.md).
+[cpsc-language-overview(7)](../cpsc-language-overview.7.md), [cpsc-keyword-and(7)](cpsc-keyword-and.7.md), [cpsc-keyword-or(7)](cpsc-keyword-or.7.md), [cpsc-keyword-not(7)](cpsc-keyword-not.7.md).
 
diff --git a/doc/language/cpsc-keyword-input.7.md b/doc/language/keyword/cpsc-keyword-input.7.md
index f31731f..c14fac1 100644
--- a/doc/language/cpsc-keyword-input.7.md
+++ b/doc/language/keyword/cpsc-keyword-input.7.md
@@ -27,5 +27,5 @@ OUTPUT Name
 
 # SEE ALSO
 
-[cpsc-language-overview(7)](cpsc-language-overview.7.md), [cpsc-keyword-declare(7)](cpsc-keyword-declare.7.md), [cpsc-keyword-output(7)](cpsc-keyword-output.7.md).
+[cpsc-language-overview(7)](../cpsc-language-overview.7.md), [cpsc-keyword-declare(7)](cpsc-keyword-declare.7.md), [cpsc-keyword-output(7)](cpsc-keyword-output.7.md).
 
diff --git a/doc/language/cpsc-keyword-mod.7.md b/doc/language/keyword/cpsc-keyword-mod.7.md
index cb437a4..2eceeb5 100644
--- a/doc/language/cpsc-keyword-mod.7.md
+++ b/doc/language/keyword/cpsc-keyword-mod.7.md
@@ -25,5 +25,5 @@ OUTPUT 7 MOD 2
 
 # SEE ALSO
 
-[cpsc-language-overview(7)](cpsc-language-overview.7.md), [cpsc-keyword-div(7)](cpsc-keyword-div.7.md).
+[cpsc-language-overview(7)](../cpsc-language-overview.7.md), [cpsc-keyword-div(7)](cpsc-keyword-div.7.md).
 
diff --git a/doc/language/cpsc-keyword-not.7.md b/doc/language/keyword/cpsc-keyword-not.7.md
index 5bb1c18..0ada425 100644
--- a/doc/language/cpsc-keyword-not.7.md
+++ b/doc/language/keyword/cpsc-keyword-not.7.md
@@ -23,5 +23,5 @@ OUTPUT NOT (3 = 2)
 
 # SEE ALSO
 
-[cpsc-language-overview(7)](cpsc-language-overview.7.md), [cpsc-keyword-and(7)](cpsc-keyword-and.7.md), [cpsc-keyword-or(7)](cpsc-keyword-or.7.md), [cpsc-keyword-if(7)](cpsc-keyword-if.7.md).
+[cpsc-language-overview(7)](../cpsc-language-overview.7.md), [cpsc-keyword-and(7)](cpsc-keyword-and.7.md), [cpsc-keyword-or(7)](cpsc-keyword-or.7.md), [cpsc-keyword-if(7)](cpsc-keyword-if.7.md).
 
diff --git a/doc/language/cpsc-keyword-openfile.7.md b/doc/language/keyword/cpsc-keyword-openfile.7.md
index a13b3f4..2aa2b44 100644
--- a/doc/language/cpsc-keyword-openfile.7.md
+++ b/doc/language/keyword/cpsc-keyword-openfile.7.md
@@ -33,5 +33,5 @@ CLOSEFILE "notes.txt"
 
 # SEE ALSO
 
-[cpsc-language-overview(7)](cpsc-language-overview.7.md), [cpsc-keyword-readfile(7)](cpsc-keyword-readfile.7.md), [cpsc-keyword-writefile(7)](cpsc-keyword-writefile.7.md), [cpsc-keyword-closefile(7)](cpsc-keyword-closefile.7.md).
+[cpsc-language-overview(7)](../cpsc-language-overview.7.md), [cpsc-keyword-readfile(7)](cpsc-keyword-readfile.7.md), [cpsc-keyword-writefile(7)](cpsc-keyword-writefile.7.md), [cpsc-keyword-closefile(7)](cpsc-keyword-closefile.7.md).
 
diff --git a/doc/language/cpsc-keyword-or.7.md b/doc/language/keyword/cpsc-keyword-or.7.md
index 7fca628..4594215 100644
--- a/doc/language/cpsc-keyword-or.7.md
+++ b/doc/language/keyword/cpsc-keyword-or.7.md
@@ -24,5 +24,5 @@ OUTPUT (3 < 2) OR (4 > 1)
 
 # SEE ALSO
 
-[cpsc-language-overview(7)](cpsc-language-overview.7.md), [cpsc-keyword-and(7)](cpsc-keyword-and.7.md), [cpsc-keyword-not(7)](cpsc-keyword-not.7.md), [cpsc-keyword-if(7)](cpsc-keyword-if.7.md).
+[cpsc-language-overview(7)](../cpsc-language-overview.7.md), [cpsc-keyword-and(7)](cpsc-keyword-and.7.md), [cpsc-keyword-not(7)](cpsc-keyword-not.7.md), [cpsc-keyword-if(7)](cpsc-keyword-if.7.md).
 
diff --git a/doc/language/cpsc-keyword-output.7.md b/doc/language/keyword/cpsc-keyword-output.7.md
index 9ee2133..a1c2d2a 100644
--- a/doc/language/cpsc-keyword-output.7.md
+++ b/doc/language/keyword/cpsc-keyword-output.7.md
@@ -28,5 +28,5 @@ OUTPUT "Score: ", Score
 
 # SEE ALSO
 
-[cpsc-language-overview(7)](cpsc-language-overview.7.md), [cpsc-keyword-input(7)](cpsc-keyword-input.7.md), [cpsc-keyword-declare(7)](cpsc-keyword-declare.7.md).
+[cpsc-language-overview(7)](../cpsc-language-overview.7.md), [cpsc-keyword-input(7)](cpsc-keyword-input.7.md), [cpsc-keyword-declare(7)](cpsc-keyword-declare.7.md).
 
diff --git a/doc/language/cpsc-keyword-procedure.7.md b/doc/language/keyword/cpsc-keyword-procedure.7.md
index b2e6108..d8be9f4 100644
--- a/doc/language/cpsc-keyword-procedure.7.md
+++ b/doc/language/keyword/cpsc-keyword-procedure.7.md
@@ -39,5 +39,5 @@ OUTPUT Count
 
 # SEE ALSO
 
-[cpsc-language-overview(7)](cpsc-language-overview.7.md), [cpsc-keyword-call(7)](cpsc-keyword-call.7.md), [cpsc-keyword-function(7)](cpsc-keyword-function.7.md).
+[cpsc-language-overview(7)](../cpsc-language-overview.7.md), [cpsc-keyword-call(7)](cpsc-keyword-call.7.md), [cpsc-keyword-function(7)](cpsc-keyword-function.7.md).
 
diff --git a/doc/language/cpsc-keyword-readfile.7.md b/doc/language/keyword/cpsc-keyword-readfile.7.md
index 71cd3db..8260dd2 100644
--- a/doc/language/cpsc-keyword-readfile.7.md
+++ b/doc/language/keyword/cpsc-keyword-readfile.7.md
@@ -30,5 +30,5 @@ CLOSEFILE "notes.txt"
 
 # SEE ALSO
 
-[cpsc-language-overview(7)](cpsc-language-overview.7.md), [cpsc-keyword-openfile(7)](cpsc-keyword-openfile.7.md), [cpsc-keyword-closefile(7)](cpsc-keyword-closefile.7.md), [cpsc-function-eof(7)](cpsc-function-eof.7.md).
+[cpsc-language-overview(7)](../cpsc-language-overview.7.md), [cpsc-keyword-openfile(7)](cpsc-keyword-openfile.7.md), [cpsc-keyword-closefile(7)](cpsc-keyword-closefile.7.md), [cpsc-function-eof(7)](../function/cpsc-function-eof.7.md).
 
diff --git a/doc/language/cpsc-keyword-repeat.7.md b/doc/language/keyword/cpsc-keyword-repeat.7.md
index 42fdd2d..b1a73c2 100644
--- a/doc/language/cpsc-keyword-repeat.7.md
+++ b/doc/language/keyword/cpsc-keyword-repeat.7.md
@@ -30,5 +30,5 @@ UNTIL Count = 3
 
 # SEE ALSO
 
-[cpsc-language-overview(7)](cpsc-language-overview.7.md), [cpsc-keyword-while(7)](cpsc-keyword-while.7.md), [cpsc-keyword-for(7)](cpsc-keyword-for.7.md).
+[cpsc-language-overview(7)](../cpsc-language-overview.7.md), [cpsc-keyword-while(7)](cpsc-keyword-while.7.md), [cpsc-keyword-for(7)](cpsc-keyword-for.7.md).
 
diff --git a/doc/language/cpsc-keyword-type.7.md b/doc/language/keyword/cpsc-keyword-type.7.md
index d630403..9dd4c73 100644
--- a/doc/language/cpsc-keyword-type.7.md
+++ b/doc/language/keyword/cpsc-keyword-type.7.md
@@ -49,5 +49,5 @@ OUTPUT Position.X
 
 # SEE ALSO
 
-[cpsc-language-overview(7)](cpsc-language-overview.7.md), [cpsc-keyword-declare(7)](cpsc-keyword-declare.7.md), [cpsc-keyword-class(7)](cpsc-keyword-class.7.md).
+[cpsc-language-overview(7)](../cpsc-language-overview.7.md), [cpsc-keyword-declare(7)](cpsc-keyword-declare.7.md), [cpsc-keyword-class(7)](cpsc-keyword-class.7.md).
 
diff --git a/doc/language/cpsc-keyword-while.7.md b/doc/language/keyword/cpsc-keyword-while.7.md
index e6707b4..c6d8721 100644
--- a/doc/language/cpsc-keyword-while.7.md
+++ b/doc/language/keyword/cpsc-keyword-while.7.md
@@ -30,5 +30,5 @@ ENDWHILE
 
 # SEE ALSO
 
-[cpsc-language-overview(7)](cpsc-language-overview.7.md), [cpsc-keyword-repeat(7)](cpsc-keyword-repeat.7.md), [cpsc-keyword-for(7)](cpsc-keyword-for.7.md).
+[cpsc-language-overview(7)](../cpsc-language-overview.7.md), [cpsc-keyword-repeat(7)](cpsc-keyword-repeat.7.md), [cpsc-keyword-for(7)](cpsc-keyword-for.7.md).
 
diff --git a/doc/language/cpsc-keyword-writefile.7.md b/doc/language/keyword/cpsc-keyword-writefile.7.md
index a00be5e..caeafe7 100644
--- a/doc/language/cpsc-keyword-writefile.7.md
+++ b/doc/language/keyword/cpsc-keyword-writefile.7.md
@@ -26,5 +26,5 @@ CLOSEFILE "notes.txt"
 
 # SEE ALSO
 
-[cpsc-language-overview(7)](cpsc-language-overview.7.md), [cpsc-keyword-openfile(7)](cpsc-keyword-openfile.7.md), [cpsc-keyword-closefile(7)](cpsc-keyword-closefile.7.md), [cpsc-function-num_to_str(7)](cpsc-function-num_to_str.7.md).
+[cpsc-language-overview(7)](../cpsc-language-overview.7.md), [cpsc-keyword-openfile(7)](cpsc-keyword-openfile.7.md), [cpsc-keyword-closefile(7)](cpsc-keyword-closefile.7.md), [cpsc-function-num_to_str(7)](../function/cpsc-function-num_to_str.7.md).
 
diff --git a/install.ps1 b/install.ps1
index 7d8ccce..e09efb3 100644
--- a/install.ps1
+++ b/install.ps1
@@ -3,7 +3,7 @@
 .SYNOPSIS
 Installs cpsc and its HTML manual for the current user.
 .DESCRIPTION
-Copies cpsc.exe, doc\cpsc.html and doc\language\*.html, creates a help shortcut, and
+Copies cpsc.exe, doc\cpsc.html and doc\language HTML pages, creates a help shortcut, and
 adds the installation directory to the user PATH. No administrator is needed
 for the default location: %LOCALAPPDATA%\Programs\cpsc.
 .EXAMPLE
@@ -26,7 +26,7 @@ $ErrorActionPreference = 'Stop'
 if ($Help) {
     Write-Output 'Usage: install.ps1 [-Prefix DIR] [-SourceDir DIR] [-Help]'
     Write-Output 'Default destination: %LOCALAPPDATA%\Programs\cpsc'
-    Write-Output 'Source must contain cpsc.exe, doc\cpsc.html and doc\language\*.html; default: script directory.'
+    Write-Output 'Source must contain cpsc.exe, doc\cpsc.html and doc\language HTML pages; default: script directory.'
     return
 }
 
@@ -75,7 +75,19 @@ try {
     if (-not (Test-Path -LiteralPath $sourceLanguageDir -PathType Container)) {
         throw "Missing language manuals: $sourceLanguageDir; build the doc target first."
     }
-    $languageManuals = @(Get-ChildItem -LiteralPath $sourceLanguageDir -Filter 'cpsc-*.html' -File)
+    $sourceOverview = Join-Path $sourceLanguageDir 'cpsc-language-overview.html'
+    if (-not (Test-Path -LiteralPath $sourceOverview -PathType Leaf)) {
+        throw "Missing language overview: $sourceOverview; build the doc target first."
+    }
+    $languageManuals = @(Get-Item -LiteralPath $sourceOverview)
+    foreach ($category in @('function', 'keyword')) {
+        $categoryDir = Join-Path $sourceLanguageDir $category
+        $categoryManuals = @(Get-ChildItem -LiteralPath $categoryDir -Filter "cpsc-$category-*.html" -File)
+        if ($categoryManuals.Count -eq 0) {
+            throw "Missing language manuals: $categoryDir; build the doc target first."
+        }
+        $languageManuals += $categoryManuals
+    }
     if ($languageManuals.Count -eq 0) {
         throw "Missing language manuals: $sourceLanguageDir; build the doc target first."
     }
@@ -84,14 +96,14 @@ try {
     $languageDir = Join-Path $docDir 'language'
     $targetExe = Join-Path $Prefix 'cpsc.exe'
     $targetManual = Join-Path $docDir 'cpsc.html'
-    foreach ($directory in @($Prefix, $docDir, $languageDir)) {
+    foreach ($directory in @($Prefix, $docDir, $languageDir, (Join-Path $languageDir 'function'), (Join-Path $languageDir 'keyword'))) {
         if ((Test-Path -LiteralPath $directory) -and
             -not (Test-Path -LiteralPath $directory -PathType Container)) {
             throw "Installation directory is occupied by a file: $directory"
         }
     }
     $targetFiles = @($targetExe, $targetManual) + @($languageManuals | ForEach-Object {
-        Join-Path $languageDir $_.Name
+        Join-Path $languageDir ($_.FullName.Substring($sourceLanguageDir.Length + 1))
     })
     foreach ($file in $targetFiles) {
         if (Test-Path -LiteralPath $file -PathType Container) {
@@ -107,7 +119,9 @@ try {
     $shell = New-Object -ComObject WScript.Shell
 
     # Directory.CreateDirectory treats paths literally, including spaces and brackets.
-    [IO.Directory]::CreateDirectory($languageDir) | Out-Null
+    foreach ($category in @('function', 'keyword')) {
+        [IO.Directory]::CreateDirectory((Join-Path $languageDir $category)) | Out-Null
+    }
     if ($sourceExe -ine $targetExe) {
         Copy-Item -LiteralPath $sourceExe -Destination $targetExe -Force
     }
@@ -115,7 +129,7 @@ try {
         Copy-Item -LiteralPath $sourceManual -Destination $targetManual -Force
     }
     foreach ($manual in $languageManuals) {
-        $destination = Join-Path $languageDir $manual.Name
+        $destination = Join-Path $languageDir ($manual.FullName.Substring($sourceLanguageDir.Length + 1))
         if ($manual.FullName -ine $destination) {
             Copy-Item -LiteralPath $manual.FullName -Destination $destination -Force
         }
diff --git a/install.sh b/install.sh
index fbe98a2..6f0f263 100755
--- a/install.sh
+++ b/install.sh
@@ -8,7 +8,8 @@ Usage: install.sh [--prefix DIR] [--source-dir DIR]
 Install cpsc to DIR/bin and its man pages to DIR/share/cpsc/man/man1 and man7.
 The default prefix is /usr/local. The source directory defaults to the
 directory containing this script and must contain cpsc, doc/cpsc.1 and
-doc/language/*.7. Installation registers the independent manual search path.
+doc/language/cpsc-language-overview.7 and doc/language/{function,keyword}/*.7.
+Installation registers the independent manual search path.
 Use --source-dir build when running this script from the source checkout.
 DESTDIR may be set to stage files without changing host manpath configuration.
 EOF
@@ -46,7 +47,9 @@ source_dir=$(CDPATH= cd -- "$source_dir" && pwd) || die "cannot open source dire
     || die "missing readable executable: $source_dir/cpsc; build cpsc first"
 [ -f "$source_dir/doc/cpsc.1" ] && [ -r "$source_dir/doc/cpsc.1" ] \
     || die "missing readable manual: $source_dir/doc/cpsc.1; run make doc first"
-set -- "$source_dir"/doc/language/cpsc-*.7
+set -- "$source_dir/doc/language/cpsc-language-overview.7" \
+    "$source_dir"/doc/language/function/cpsc-function-*.7 \
+    "$source_dir"/doc/language/keyword/cpsc-keyword-*.7
 [ -f "$1" ] || die "missing language manuals: $source_dir/doc/language; run make doc first"
 for manual do
     [ -f "$manual" ] && [ -r "$manual" ] || die "missing readable manual: $manual"