Expansion of Variables
One of the most powerful features of the CopiaFacts syntax is the ability to expand "variables", or "macros", to change the effects of commands and templates at run-time. Variables have alphanumeric names of maximum length 32 characters which are not case-sensitive. Spaces in variable names are supported but not recommended. The maximum length of the value of a variable is approximately 8000 characters.
Essential features of the uses of variables are described in the following sections
See also Appendix D, which documents all variable names known to the system.