File: varsl.doc

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\DOC varsl

\TYPE {varsl : (term list -> term list)}

\SYNOPSIS
Returns the union of the variables that occur in a given list of terms.

\DESCRIBE
Given a list of terms, {varsl} returns a list of all the variables that occur
in the list of terms.

\EXAMPLE
{
#varsl ["\a:bool. a"];;
["a"] : term list

#vars "[(a:num) + (b:num); 3 + (a:num) + SUC n]";;
["a"; "b"; "n"] : term list
}
\SEEALSO
vars.

\ENDDOC