Goto loops

You can use goto command to jump from one point to another in a script.
Goto's aren't used very much.

alias channels {
  [var] %i , %chans 
  :nexti
  [inc] %i
  [if] (%i > [$chan](0)) { [return] %chans }
  var %chans = %chans $chan(%i)
  [goto] nexti
}