Templates provide formatting for content. This editor shows what options a template provides on the left and values can then be added to those options on the right.
Press Space to add or remove parameters. Press Enter to add a parameter and immediately edit its value. When a parameter is already selected, press Enter to edit the value.
Template documentation and [//www.mediawiki.org/wiki/Special:MyLanguage/Manual:Glossary#Parameter parameter] names (if existing) are not available when editing templates utilizing nested syntax or modifiers, such as [//www.mediawiki.org/wiki/Special:MyLanguage/Help:Substitution subst].