Currently the '~' is supported only at the front of the string (partial matches).
I recommend strongly that it be supported anywhere in the string, including multiple places.
Examples
abc~ ...matches any string beginning with 'abc'
abc~xyz ...matches any string that starts wiht 'abc' and ends with 'xyz'
abc~mn~xyz ...well, you get the idea
Note that this is really just simple pattern matching (which is supported) but a lot simpler to code and visually see what its doing
-Great product
David