It would be nice to have a way of grouping certain areas by adding a light rectangular background behind them. It may have a `name` property displayed in a top left corner.
- Show border [boolean] (or something fancier like border-width etc.)
- Name placement (decide when to place name: center or one of the corners)
- Group elements [boolean] (when checked moving rectangle or any element in it also moves everything on it)
- Match elements [boolean] (if checked table/notes should have similar colors as background rectangle)
3rd may be related to 162-allow-to-group-tables
Examples (without names):
Customer support service by UserEcho