[msimon785]

<G21> introduces appendages, but it does not clearly define them.
Use fair judgement. If they are a single mechanism serving a common purpose, they should be considered a single appendage. With this said, if your design seems to "walk the line" between 1 appendage and two, you should consider changing it to fit more closely within the rules.

Please keep in mind that the GDC does not want any "lawyering" and would prefer that teams stay well within the rules.