Returns the specified text, minus any characters not in the list of valid characters. (Performs the opposite function of "stripwith".)
cleanwith( text, with )
text: (Text) The text to be "cleaned" for printing purposes.
with: (Text) The text allowed in the "cleaned" result.
Text
cleanwith("text string","xt")
returns txtt
cleanwith("text string","x t")
returns txt t
stripwith(): Use this function to perform the opposite to the cleanwith()
function.