If all of the variable
names and options that are referenced in GTL templates had to be "hard
coded" in the compiled template, it would require that you redefine
and recompile the template every time you created the same type of
graph with different variables. SAS programmers are familiar with
using SAS macros and macro variables to build application code in
which variables and other parameters can be specified by a calling
program. The same techniques, as well as other techniques unique to
ODS templates, can be applied in GTL to create reusable templates.