phantom2.gms : Phantoms can only have default values - ondelim
Small Model of Type: GAMS
$title Phantoms can only have default values - ondelim (PHANTOM2,SEQ=29)
$phantom empty
$ondelim
parameter x(*) /
empty 0
zero 0
one 1
empty 1
/
$offdelim
$debug dmpuel
$if errorfree $goto problem
$clearerror
$terminate
$label problem
$error the second empty is wrong
