I have a character variable, lets say it is made up of the alphabet.
I want to be able to filter on said variable. However, rather than just wanting 'A' or 'B' sometimes I am going to want ('A', 'B', 'C') or ('D', 'F') or just 'A'.
Rather than 26 values to choose from, I have about 23,000. Therefore a 'multiple items from list with seperator between them' is a poor option. In short I have 23,000 distinct values, an indeterminable number of said combinations, an unknown minum or maximum number required and oh, yeah I need maximum flexibility herE.