Opnqryf with Many Selections

I don't remember how many times I have been asked to do this,
and I have never seen an reasonable way to handle it.

I need to prompt for 7 paramters in a selection screen. 

Any or all of the parms can be entered, with the end result
being a collection of "and" conditions. 

The parms look like somthing along these lines:

Agent     xxxxx
coverage  xxx
state     xx
inforce   (y/n)
underwriter xxx
company     xxx
payee       xxx

As many of you know, opnqryf can get pretty strange looking with
a bunch of "and" conditions. To make matters worse, "each" parm 
can be optional(no selection= print all). I have done this a couple
of different ways using CLP and even RPG but I just wondered what
other folks have come up with. I have never been happy with my 
methods.
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