diff --git a/Scripts/Bash/Functions/Html/html.sh b/Scripts/Bash/Functions/Html/html.sh
index b084b79..52af4fb 100755
--- a/Scripts/Bash/Functions/Html/html.sh
+++ b/Scripts/Bash/Functions/Html/html.sh
@@ -26,17 +26,10 @@
     
 function html {
 
+    # Define variables.
     local FILES=''
 
-    # Define list of html files to process using option value as
-    # reference.
-    if [[ -d $OPTIONVAL ]];then
-        FILES=$(find $OPTIONVAL -regextype posix-egrep -type f -regex '.*/*.(html|htm)$')
-    elif [[ -f $OPTIONVAL ]];then
-        FILES=$OPTIONVAL
-    fi
-    
-    # Define command line interface for html-based actions.
+    # Define command-line interface.
     html_getActions 
 
 }
diff --git a/Scripts/Bash/Functions/Html/html_getActions.sh b/Scripts/Bash/Functions/Html/html_getActions.sh
index 2f1b4f8..ca1e27f 100755
--- a/Scripts/Bash/Functions/Html/html_getActions.sh
+++ b/Scripts/Bash/Functions/Html/html_getActions.sh
@@ -29,7 +29,7 @@ function html_getActions {
 
     # Evaluate option name and define which actions does centos-art.sh
     # script supports.
-    case $OPTIONNAM in
+    case $ACTIONNAM in
 
         '--update-headings' )
             # Update html headings to create table of content.
diff --git a/Scripts/Bash/Functions/Html/html_updateHeadings.sh b/Scripts/Bash/Functions/Html/html_updateHeadings.sh
index 5232b9a..8392aea 100644
--- a/Scripts/Bash/Functions/Html/html_updateHeadings.sh
+++ b/Scripts/Bash/Functions/Html/html_updateHeadings.sh
@@ -57,6 +57,39 @@ function html_updateHeadings {
     # to save html option name, option value, and heading title.
     PATTERN="<h([1-9])>(<a.*[^\>]>)(.*[^<])</a></h[1-9]>"
 
+    # Define short options we want to support.
+    local ARGSS=""
+
+    # Define long options we want to support.
+    local ARGSL="filter:"
+
+    # Parse arguments using getopt(1) command parser.
+    cli_doParseArguments
+
+    # Reset positional parameters using output from (getopt) argument
+    # parser.
+    eval set -- "$ARGUMENTS"
+
+    # Define action to take for each option passed.
+    while true; do
+        case "$1" in
+            --filter )
+               REGEX="$2" 
+               shift 2
+               ;;
+            * )
+                break
+        esac
+    done
+
+    # Re-define regular expression in order to force matching to html
+    # files only.
+    REGEX=$(echo "${REGEX}\.(html|htm)")
+
+    # Define list of files to process.
+    cli_getFilesList
+
+    # Process list of files.
     for FILE in $FILES;do
 
         # Verify list of html files. Are files really html files? If