Tile grid in picture editor

Will be nice to have configurable tiles grid option for picture editor.

In configure:

• Show/hide grid (some switch button on some editor panel)
• grid type:
  • lines (thin lines by row & column)
  • dotted (dotted lines)
  • corner dots (only crosses on corners of pixels)
• lines height (in px, thikness)
• lines color (RGB or RGBA of lines)
• grid size (which heigth & width 'blocks' will be drawn)

Technically i see this as new "layer" in editor, sized to image with simple drawing functions.

Maybe do an example javascript demo to understand my point...

Why this can be useful?

Well, like drawing spritemap for tilemaps not as frames, but a whole picture to future separate (right now editor can smart separating, its very nice!)