diff --git a/modules/math_libs.cmake b/modules/math_libs.cmake
index ac80156..6cbf582 100644
--- a/modules/math_libs.cmake
+++ b/modules/math_libs.cmake
@@ -18,7 +18,7 @@
 #   BLACS_IMPLEMENTATION
 #   MKL_FLAG
 #
-# Variables set::
+# Variables defined::
 #
 #   MATH_LIBS
 #   BLAS_FOUND
diff --git a/modules/safeguards.cmake b/modules/safeguards.cmake
index bf6688d..a354892 100644
--- a/modules/safeguards.cmake
+++ b/modules/safeguards.cmake
@@ -1,19 +1,27 @@
-function(guard_against_in_source in_source_dir in_binary_dir)
-    if(${in_source_dir} STREQUAL ${in_binary_dir})
-        message(FATAL_ERROR "In-source builds not allowed. Please make a new directory (called a build directory) and run CMake from there.")
-    endif()
-endfunction()
+#.rst:
+#
+# Provides safeguards against in-source builds and bad build types.
+#
+# Variables used::
+#
+#   PROJECT_SOURCE_DIR
+#   PROJECT_BINARY_DIR
+#   CMAKE_BUILD_TYPE
+#
+# Example autocmake.cfg entry::
+#
+#   [safeguards]
+#   source: https://github.com/scisoft/autocmake/raw/master/modules/safeguards.cmake
 
-function(guard_against_bad_build_types in_build_type)
-    string(TOLOWER "${in_build_type}" cmake_build_type_tolower)
-    string(TOUPPER "${in_build_type}" cmake_build_type_toupper)
+if(${PROJECT_SOURCE_DIR} STREQUAL ${PROJECT_BINARY_DIR})
+    message(FATAL_ERROR "In-source builds not allowed. Please make a new directory (called a build directory) and run CMake from there.")
+endif()
 
-    if(    NOT cmake_build_type_tolower STREQUAL "debug"
-       AND NOT cmake_build_type_tolower STREQUAL "release"
-       AND NOT cmake_build_type_tolower STREQUAL "relwithdebinfo")
-        message(FATAL_ERROR "Unknown build type \"${in_build_type}\". Allowed values are Debug, Release, RelWithDebInfo (case-insensitive).")
-    endif()
-endfunction()
+string(TOLOWER "${CMAKE_BUILD_TYPE}" cmake_build_type_tolower)
+string(TOUPPER "${CMAKE_BUILD_TYPE}" cmake_build_type_toupper)
 
-guard_against_in_source(${PROJECT_SOURCE_DIR} ${PROJECT_BINARY_DIR})
-guard_against_bad_build_types(${CMAKE_BUILD_TYPE})
+if(    NOT cmake_build_type_tolower STREQUAL "debug"
+   AND NOT cmake_build_type_tolower STREQUAL "release"
+   AND NOT cmake_build_type_tolower STREQUAL "relwithdebinfo")
+    message(FATAL_ERROR "Unknown build type \"${CMAKE_BUILD_TYPE}\". Allowed values are Debug, Release, RelWithDebInfo (case-insensitive).")
+endif()
diff --git a/modules/src.cmake b/modules/src.cmake
index 09c6426..1abaddf 100644
--- a/modules/src.cmake
+++ b/modules/src.cmake
@@ -1 +1,5 @@
+#.rst:
+#
+# Adds ${PROJECT_SOURCE_DIR}/src as subdirectory containing CMakeLists.txt.
+
 add_subdirectory(${PROJECT_SOURCE_DIR}/src)
diff --git a/modules/static_linking.cmake b/modules/static_linking.cmake
index 73bb2c4..0cace63 100644
--- a/modules/static_linking.cmake
+++ b/modules/static_linking.cmake
@@ -1,3 +1,20 @@
+#.rst:
+#
+# Enables static linking by appending corresponding compiler flags.
+#
+# Variables modified (provided the corresponding language is enabled)::
+#
+#   CMAKE_Fortran_FLAGS
+#   CMAKE_C_FLAGS
+#   CMAKE_CXX_FLAGS
+#
+# Example autocmake.cfg entry::
+#
+#   [static_linking]
+#   source: https://github.com/scisoft/autocmake/raw/master/modules/static_linking.cmake
+#   docopt: --static Enable static linking [default: False].
+#   define: '-DENABLE_STATIC_LINKING=%s' % arguments['--static']
+
 option(ENABLE_STATIC_LINKING "Enable static libraries linking" OFF)
 
 if(ENABLE_STATIC_LINKING)