When programming, you may need to know the specific version number of the Essential Tools Module to perform certain operations. This number is given by the macro RWTOOLS, expressed as a hexadecimal number. For example, version 1.2.3 would be 0x123. This can be used for conditional compilations.

If the version is needed at run time, you can find it via the function rwToolsVersion(), declared in header file <rw/tooldefs.h>.