PPWIZARD is a free preprocessor for HTML, REXX, Visual Basic or any text files.
This variable contains the location of the "TMP" or "TEMP" (temporary) directory. It never ends with a slash and is typically an operating system based configuration value.
You may wish to use this value to create a temporary file, these are typically deleted when no longer required.
This is a Standard Definition which always exists (you don't need to #define it). Note that you can create your own variations or completely new ones (see the examples).