Multiple line comments

While one can enter a series of comments beginning with an * in column 1, there are cases where it is most convenient to incorporate a multi line text comment without the need for an * in each line.  This is done by using the paired $ commands $Ontext and $Offtext. $Ontext causes all lines after it to be treated as comments regardless of content. $Offtext terminates the comment begun by a $Ontext making subsequent lines regular GAMS statements.  The lines in between constitute the comment.

Example:

(commentdol.gms)

$ontext

Here is a file showing how to use

various types of comments

valid GAMS statements can also be in the

comment but will not be compiled

set a /1*11/;

$offtext

set a /a1,a2/;

set b /a2,c2/

set c /a3,d3/;

Notes: