I think it would be best if an inbuilt debugger is built into Lite-C environment like in GameStudio SED script editor. This functionality can then be further integrated into a separate editor like SED or Notepad++ or Visual Studio Code etc .... If there is a place where one could vote for features in the next version of Zorro; I'll vote for this.

Seriously,.... editor debugging options are limited in Zorro.
1. printf
2. message
3. watch

Please post more if I missed any...