Hi.? I want to stop ASCII trolls from registering on my forum.? It is a PunBB forum.? ? To prevent ASCII impersonations, new username registrations? will be limited to a subset of characters, abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ, plus the space, period and comma.? Just those.? This will should not affect user names that are already registered.? Very simple fix for someone who is knowledgible.? Thank you.