Simplify the following text for a Grade 14 native English-speaking person.
Original: Wikipedia pages are written in the MediaWiki markup language , which supports some HTML coding , such as or tags , but which also allows special coding for wikitables , infoboxes , navboxes , and templates ( see : HELP : Template or A quick guide to templates ) .
Simplified: Wikipedia pages are written in the MediaWiki markup language , which supports some HTML coding , and which also allows special coding for wikitables , infoboxes , navboxes , and templates ( see : HELP : Template ) .