Since amsgs are against the rules in #mIRC on Purplesurge, I have made an altered amsg alias that doesn't play in that channel.

Author: Rolo @ #mIRC on Purplesurge
Edit: Changed goto loop to while loop - Apocalypse

alias amsg {
  if ($network == PurpleSurge) {
    var %x 1
    while (%x <= $chan(0)) {
      if ($chan(%x) != #mIRC) msg $chan(%x) $1-
      inc %x
    }
  }
  else !amsg $1-
}

alias ame {
  if ($network == PurpleSurge) {
    var %x 1
    while (%x <= $chan(0)) {
      if ($chan(%x) != #mIRC) describe $chan(%x) $1-
      inc %x
    }
  }
  else !ame $1-
}