Compatibility, Simplicity, and Cost.
Compatibility – To ensure the widest possible compatibility across MediaWiki servers, Real Obvious Highlight is installed as an enhancement (not a plugin). Installing Real Obvious Highlight is easy as 1 (no 2 or 3) — Step 1) Create the MediaWiki Highlight Template.
Simplicity – MediaWiki Templates are used to add “Highlight” of text to a wiki page. Real Obvious Highlight ensures a common look and feel of Highlighted text for the MediaWiki site.
Cost – Real Obvious Highlight is made available free of charge.