clear3.gms : $clear acts like a data statement and knows about alias
Small Model of Type: GAMS
$title $clear acts like a data statement and knows about alias (CLEAR3,SEQ=11)
set i / a,b,c /; alias(i,j);
$clear j
abort$card(i) 'set should be empty', i;
abort$card(j) 'set should be empty', j;