REPVAR  Variable OldString NewString CI|CS

  Will replace all occurances of OldString in Variable with NewString.
  CS means case sensitive, CI case insensitive.

  example :

  x = "This is a test string"
  RepVar x  "is"  "XXX"  CI

  ; now x will contain "ThXXX XXX a test string"

  If you want to make replacements on *all* the records of a listview
  you can use the - LVREP OldString NewString CI|CS - command.