Additional form controls related to editors should be grouped with it

[Reinmar]

E.g.:

• tabindex.html
• api.html
• enterkey.html
• savetextarea.html
• readonly.html and codesnippet.html (not sure about these)

On the other hand I'm a little bit worried about inconsistency which will be introduced by a grouping box. Also, there's already a lot of borders... WDYT?

[wwalc]

Do you have any prototype on how do you see it? Note that in case of API sample the whole thing (the editor and controls) should be visible within a viewport on a relatively small screen (on a laptop let's say), otherwise user would not see the result of actions that he made.