Not only was there a problem with storing long strings in a listview my code had a problem displaying long strings and I can't figure out why.
Soooo...
@IWGANY type cells will be limited to 254 characters - period.
The similar problem of the storage of the total length of all the option strings in a IWGCOMBO type cell is fixed.
The limit is 10,000 characters including the option separators "|".
So, back to working on the help file.