Small Model of Type: GAMS
$title 'Tests for setenv and dropenv' (SYSENV02,SEQ=220)
$ondollar
$set env this is very silly
$setenv verysilly %env%
$if NOT "%env%" == "%sysenv.verysilly%" $error sentenv did not work
$dropenv verysilly
$if setenv verysilly $error should not be true
