Download link: (Windows) ZPP.zip
ZPP is a c/c++/zscript preprocessor that can be safely used with the ZScript compiler. Download comes with example files and readme. It's pretty self explanatory so you can just give it a whirl.
Most immediate uses for average scripters are obviously additions of multi-line comment blocks: "/* comment */" , debug macros, and macro function expansion. As of 1403 (for windows) with the addition of a debug console, script tracing becomes extremely less painful to use.
Let me know if there are any problems.