diff --git a/build/documentation/build_docs.sh b/build/documentation/build_docs.sh
index a378471..7d2dcc2 100755
--- a/build/documentation/build_docs.sh
+++ b/build/documentation/build_docs.sh
@@ -9,6 +9,8 @@
 
 TIDY_PATH="./tidy5"         # Current directory.
 
+TIDY_VERSION=`cat ../../version.txt`
+
 
 cat << HEREDOC
 
@@ -104,7 +106,7 @@ hash doxygen 2>/dev/null || { echo "- doxygen not found. This script requires do
 
 if [ "$BUILD_API" -eq 1 ]; then
   echo "The following is doxygen's stderr output. It doesn't indicate errors with this script:\n"
-  doxygen "$DOXY_CFG" > /dev/null
+  ( cat "$DOXY_CFG"; echo "PROJECT_NUMBER=$TIDY_VERSION" ) | doxygen - > /dev/null
   echo "\nTidyLib API documentation has been built."
 else
   echo "* $OUTP_DIR/tidylib_api/ was skipped because not all dependencies were satisfied."
diff --git a/build/documentation/doxygen.cfg b/build/documentation/doxygen.cfg
index 6aee6f7..847b5f1 100644
--- a/build/documentation/doxygen.cfg
+++ b/build/documentation/doxygen.cfg
@@ -475,14 +475,14 @@ INLINE_INFO            = YES
 # alphabetically by member name. If set to NO the members will appear in
 # declaration order.
 
-SORT_MEMBER_DOCS       = NO
+SORT_MEMBER_DOCS       = YES
 
 # If the SORT_BRIEF_DOCS tag is set to YES then doxygen will sort the
 # brief documentation of file, namespace and class members alphabetically
 # by member name. If set to NO (the default) the members will appear in
 # declaration order.
 
-SORT_BRIEF_DOCS        = NO
+SORT_BRIEF_DOCS        = YES
 
 # If the SORT_MEMBERS_CTORS_1ST tag is set to YES then doxygen
 # will sort the (brief and detailed) documentation of class members so that
@@ -498,7 +498,7 @@ SORT_MEMBERS_CTORS_1ST = NO
 # hierarchy of group names into alphabetical order. If set to NO (the default)
 # the group names will appear in their defined order.
 
-SORT_GROUP_NAMES       = NO
+SORT_GROUP_NAMES       = YES
 
 # If the SORT_BY_SCOPE_NAME tag is set to YES, the class list will be
 # sorted by fully-qualified names, including namespaces. If set to
@@ -508,7 +508,7 @@ SORT_GROUP_NAMES       = NO
 # Note: This option applies only to the class list, not to the
 # alphabetical list.
 
-SORT_BY_SCOPE_NAME     = NO
+SORT_BY_SCOPE_NAME     = YES
 
 # If the STRICT_PROTO_MATCHING option is enabled and doxygen fails to
 # do proper type resolution of all parameters of a function it will reject a
@@ -624,7 +624,7 @@ WARNINGS               = YES
 # for undocumented members. If EXTRACT_ALL is set to YES then this flag will
 # automatically be disabled.
 
-WARN_IF_UNDOCUMENTED   = NO
+WARN_IF_UNDOCUMENTED   = YES
 
 # If WARN_IF_DOC_ERROR is set to YES, doxygen will generate warnings for
 # potential errors in the documentation, such as not documenting some