File: lhs.doc

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\DOC lhs

\TYPE {lhs : (term -> term)}

\SYNOPSIS
Returns the left-hand side of an equation.

\DESCRIBE
{lhs "t1 = t2"} returns {"t1"}.

\FAILURE
Fails with {lhs} if the term is not an equation.

\SEEALSO
rhs, dest_eq.

\ENDDOC