diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index fe85f6f..8ae2494 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -10,6 +10,7 @@ on:
       - rc1
       - rc2
       - rc3
+      - version
   pull_request:
 
 concurrency:
diff --git a/CHANGES.md b/CHANGES.md
index cd31c6c..0a8b0f2 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,8 +1,14 @@
 # **realpath** Changes <!-- omit in toc -->
 
 
-## 0.1.0 - 6th August 2026
+## 0.1.1 - 23rd August 2026
 
+T.B.C.
+
+
+## 0.1.0 - 16th August 2026
+
+* added support for '--version';
 
 
 ## 0.0.3 - 5th August 2026
diff --git a/INSTALL.md b/INSTALL.md
index 71a338d..0746a1a 100644
--- a/INSTALL.md
+++ b/INSTALL.md
@@ -4,6 +4,10 @@
 - [Requisites](#requisites)
 - [Building](#building)
   - [via CMake](#via-cmake)
+- [Requisites](#requisites-1)
+- [Building](#building-1)
+- [Installing](#installing)
+- [Testing](#testing)
 
 
 ## Requisites
diff --git a/NEWS.md b/NEWS.md
index b419039..8733477 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,10 +1,12 @@
 # realpath - News <!-- omit in toc -->
 
 
-| Date                 | News Item                                          |
-| -------------------- | -------------------------------------------------- |
-| 3rd August 2026      | 0.0.3 released                                     |
-| 4th May 2025         | 0.0.2 released                                     |
+| Date                 | News Item        |
+| -------------------- | ---------------- |
+| 23rd August 2026     | [0.1.1 released](https://github.com/sistools/realpath/releases/tag/0.1.1) |
+| 16th August 2026     | [0.1.0 released](https://github.com/sistools/realpath/releases/tag/0.1.0) |
+| 3rd August 2026      | 0.0.3 released   |
+| 4th May 2025         | 0.0.2 released   |
 
 
 <!-- ########################### end of file ########################### -->
diff --git a/generate_doxygen.cmd b/generate_doxygen.cmd
new file mode 100644
index 0000000..abb2811
--- /dev/null
+++ b/generate_doxygen.cmd
@@ -0,0 +1,135 @@
+@echo off
+
+SETLOCAL ENABLEEXTENSIONS ENABLEDELAYEDEXPANSION
+
+SET "SCRIPT_DIRECTORY=%~dp0"
+SET "SCRIPT_PATH_DOC=%~n0[%~x0]"
+IF DEFINED SIS_CMAKE_BUILD_DIR (
+
+    SET "CMAKE_DIR=%SIS_CMAKE_BUILD_DIR%"
+) ELSE (
+
+    SET "CMAKE_DIR=%SCRIPT_DIRECTORY%_build"
+)
+
+SET "DOXYGEN_OPTIONS="
+
+FOR %%a IN (%*) DO (
+    IF /I {--help}=={%%a} (
+        IF EXIST "%SCRIPT_DIRECTORY%.sis\script_info_lines.txt" (
+
+            type "%SCRIPT_DIRECTORY%.sis\script_info_lines.txt"
+        )
+        ECHO Generates HTML API documentation from public headers via Doxygen
+        ECHO(
+        ECHO %SCRIPT_PATH_DOC% [ ... flags/options ... ]
+        ECHO(
+        ECHO Flags/options:
+        ECHO(
+        ECHO     behaviour:
+        ECHO(
+        ECHO     -q
+        ECHO     --quiet
+        ECHO         causes the flag -q to be passed to Doxygen, which will then act as
+        ECHO         if QUIET=YES has been set
+        ECHO(
+        ECHO(
+        ECHO     standard flags:
+        ECHO(
+        ECHO     --help
+        ECHO         displays this help and terminates
+        ECHO(
+        ECHO Environment:
+        ECHO(
+        ECHO     SIS_CMAKE_BUILD_DIR
+        ECHO         CMake build directory ^(default: ^<project^>/_build^); documentation is
+        ECHO         written to ^<build-dir^>/doxygen/html/
+        ECHO(
+        EXIT /B 0
+    ) ELSE IF /I {-q}=={%%a} (
+        SET "DOXYGEN_OPTIONS=-q"
+    ) ELSE IF /I {--quiet}=={%%a} (
+        SET "DOXYGEN_OPTIONS=-q"
+    ) ELSE (
+        ECHO %SCRIPT_PATH_DOC%: unrecognised argument '%%a'; use --help for usage 1>&2
+
+        EXIT /B 1
+    )
+)
+
+IF NOT EXIST "%CMAKE_DIR%" (
+
+    MKDIR "%CMAKE_DIR%" 2>NUL
+    IF ERRORLEVEL 1 (
+
+        ECHO %SCRIPT_PATH_DOC%: could not create CMake build directory '%CMAKE_DIR%' 1>&2
+
+        EXIT /B 1
+    )
+)
+
+PUSHD "%CMAKE_DIR%" >NUL
+IF ERRORLEVEL 1 (
+
+    ECHO %SCRIPT_PATH_DOC%: could not enter CMake build directory '%CMAKE_DIR%' 1>&2
+
+    EXIT /B 1
+)
+
+SET "ProjectName="
+FOR /F "usebackq tokens=* delims=" %%p IN ("%SCRIPT_DIRECTORY%.sis\project_name.txt") DO SET "ProjectName=%%p"
+
+IF NOT DEFINED ProjectName (
+
+    ECHO %SCRIPT_PATH_DOC%: could not read project name from .sis\project_name.txt 1>&2
+
+    POPD
+    EXIT /B 1
+)
+
+WHERE doxygen >NUL 2>&1
+IF ERRORLEVEL 1 (
+
+    ECHO %SCRIPT_PATH_DOC%: doxygen not found on PATH 1>&2
+
+    POPD
+    EXIT /B 1
+)
+
+IF NOT EXIST "Doxyfile" (
+
+    ECHO %SCRIPT_PATH_DOC%: Doxyfile not found in '%CMAKE_DIR%' 1>&2
+
+    POPD
+    EXIT /B 1
+)
+
+IF NOT EXIST "doxygen" (
+    MKDIR "doxygen"
+    IF ERRORLEVEL 1 (
+
+        ECHO %SCRIPT_PATH_DOC%: could not create '%CMAKE_DIR%\doxygen' 1>&2
+
+        POPD
+        EXIT /B 1
+    )
+)
+
+ECHO Executing Doxygen for %ProjectName% (in %CMAKE_DIR%)
+
+(
+    type "Doxyfile"
+    ECHO.
+    ECHO # Output directory (overridden by %SCRIPT_PATH_DOC%^)
+    ECHO OUTPUT_DIRECTORY = %CMAKE_DIR%\doxygen
+) | doxygen %DOXYGEN_OPTIONS% -
+IF ERRORLEVEL 1 (
+
+    POPD
+    EXIT /B 1
+)
+
+ECHO API documentation written to %CMAKE_DIR%\doxygen\html\index.html
+
+POPD
+EXIT /B 0
diff --git a/prepare_cmake.sh b/prepare_cmake.sh
index 3c72fb4..f83e2b4 100755
--- a/prepare_cmake.sh
+++ b/prepare_cmake.sh
@@ -59,7 +59,7 @@ while [[ $# -gt 0 ]]; do
           ;;
         *)
 
-          >&2 echo "$ScriptPath: ${SisClr_Red}${SisClr_Bold}invalid C++ standard '$CStandard'${SisClr_None}; expected 98, 11, 14, 17, 20, or 23"
+          >&2 echo "$ScriptPath: ${SisClr_Red}${SisClr_Bold}invalid C++ standard '$CxxStandard'${SisClr_None}; expected 98, 11, 14, 17, 20, or 23"
 
           exit 1
           ;;