The repeat command will simply repeat the previous line of script the specified number of times. No parameter, or a parameter of 0 (ie - repeat 0), will repeat the previous line indefinitely.

• //================================
  // Attack 2 targets, then upgrade
  // your cottages first, followed
  // by your barracks
  //================================
  attack 245,325 Bubba arch:25000,warr:25000,t:1000
  attack 222,324 any t:400,b:400
  upgrade cottage
  repeat 12
  upgrade barrack
  repeat 12
  
  //================================
  // Upgrade all of your buildings
  // and resource fields to level 9:
  //================================
  upgrade
  repeat

ScriptControlStructures