StrKeep

Syntax
str StrKeep( str text1, str text2 )

Description
Deletes all of those characters in the text string specified by text1 which are not included in the list of characters specified in text2. That is, text2 specifies which characters to 'keep' in text1.

Example
StrKeep("ssd w344 56; -sd33","1234567890") //returns the text string "3445633".

Note
StrKeep is complementary to StrRem.