Glossary of terms related to the user interface!
skin edit
The skin is the overall layout of a page. There are a few different skins (you can find them in Special:Preferences). The default skin is [Vector]. The previous default skin was [Monobook].
WikiEditor edit
This is the "new" (default) edit toolbar, called the 'enhanced editing toolbar' in the user preferences. mw:Extension:WikiEditor
old ("classic") toolbar edit
This was the default editing toolbar from 20XX to 20XX.
image needed!
edittools edit
The name comes from the MediaWiki message name: MediaWiki:Edittools. It's blank by default, but wikis often customize it using the CharInsert extension.
CharInsert edit
Old extension that places some JavaScript magic ... mw:Extension:CharInsert