I was looking today for a way to make relational algebra queries on lists, and 
your "fra" package was close enough to try out. I have a number of questions, 
though:

1) Is this package superseded by any of your more recent stuff? It looks like 
m8b and grade-samurai use something file-system based instead?
2) I don't see any functions that allow translation back & forth to list-based 
representations. E.G., sexp->db. I see that you can hack this in at the syntax 
level, but this seems overly complicated.
3) The planet package has old-school references to cce/scheme, which (IIUC) is 
now superseded by stuff in the main collects tree.

 John

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