[Bug-glpk] Missing documentation {1..100:Uniform01()<.1}

[Heinrich Schuchardt]

Hello Andrew,

the following syntax is useful to produce a random set.

set J := {1..100:Uniform01()<.1};
display J;
end;

Unfortunately gmpl.pdf does not describe when random number are
evaluated in indexing expression.

Please, add a sentence like
"If the predicate of the indexing expression depends on a random
function, it will be evaluated for every index combination individually."

Best regards

Heinrich Schuchardt