Four letter names are the best. The idea there was "vowel check", and what this program does can be mimicked at least in part by a shell one-liner even my granny could grok:
cat /usr/share/dict/words | grep '.*a.*e.*i.*o.*u.*'
But no one in their right mind can write a regex that will tell me if a word has all of the vowels in it but they aren't in order. I realize that is a perfect example of the No true Scotsman fallacy, but I doubt it's one that people are going to argue over too much...
Actually, it may also be a perfect example of a tautology. That's right, kids, you're gonna need your thesaurus for this readme.
./vchk list ## list all panvowelular words (don't look that one up--I just invented it)
./vchk count ## print the number of panvowelular words
./vchk list sorted ## print all ordopanvowelular words (that's words that have all the vowels and they're in order!)
./vchk count sorted ## ...you get the idea...
The letter Y is occasionally a vowel, but my program calls bullshit on that. In fact, the VWord struct I store these words in is totally incapable of representing a sixth vowel. Too damn bad. :)