Lovers of literate programming should look at the 'PredImplies'
function from 'category.boot'. Comments suggest that it
stayed that way for 29 years.
PredImplies(a,b) ==
--true if a => b in the sense of logical implication
--a = "true" => true
a=true => true
a=b => true
false -- added by RDJ: 12/21/82
--error() -- for the time being
--
Waldek Hebisch
[email protected]
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