footer documentation tweaks
-# Define
+# Definition
To define footer, create `footer.md` file in the root of your documentation files.
Footer content will be treated as a regular page content.
-All the standard markdown features and custom extensions will work there.
+I.e. you can use the standard markdown and all the custom extensions.
-`footer.md` Content will be displayed at the bottom of each page.
\ No newline at end of file
+`footer.md` content will be displayed at the bottom of each page.
\ No newline at end of file
