ABPSC — About time to expunge "fax" from the P&P

It appears 9 times, excluding in change notes. Let's add one more occurrence of the latter by removing all occurrences of the former.
No excuse for even keeping it as an option.

We should while we're at it review when a scanned signature is really necessary. Especially where it will appear in a posted document, due to the risk of it being copied and used fraudulently. There are many cases where we should be able to rely on the signer having an OMG login and, if we had an appropriate form, would give us as much reliability as needed. For example AB nominations, VtV requests, MC charters, proxies. After all, for many important votes, such as adoptions, an email vote is sufficient.
Others might need an alternative where the signer MAY not have a login: LOI, AB 25%.