The length of the name.
=for apidoc Amx|bool|PadnameUTF8|PADNAME pn
-Whether PadnamePV is in UTF8. Currently, this is always true.
+Whether PadnamePV is in UTF-8. Currently, this is always true.
=for apidoc Amx|SV *|PadnameSV|PADNAME pn
Returns the pad name as a mortal SV.