Sticker shortcut standard

[Orion Pobursky]

Our current rules on sticker shortcuts are:

- The shortcut may not include more than one part, although that part may be a shortcut part.

- The shortcut may not be a flat sticker on the flat surface of the part unless that surface is not parallel with one of the 3 cardinal planes (X,Y,Z). Existing sticker shortcuts that do not conform to this rule can remain in the Official Library and not be made obsolete.

- The sticker(s) must entirely fit on the part, with no portions of the sticker(s) extending beyond the boundaries of the part.

- The sticker(s) must be applied in the same location(s) as shown in the instructions for the official LEGO model from which the sticker(s) originate(s).

Note: The second and third items have been superseded and will be removed.

This doesn't encapsulate the standard practices with sticker shortcuts. The current practice is as follows:
- The part and the sticker should be color 16
- If the part is an assembly of a color 16 part and a transparent part and the sticker is placed on the transparent area: 
   - For a solid color sticker, the color will be the color of the sticker back (usually white)
   - For a transparent sticker, the color will be Trans_Sticker