function exec_string(string) {
  send_command("queue addclear eqbal " + string)
}

function set_string(string) {
  sep = get_variable("sep")
  prefix = get_variable("string_prefix")
  output = prefix + sep + string
  set_variable("string", output)
}

function post_string(string) {
  sep = get_variable("sep")
  output = string + sep + args
  set_variable("string", string)
}