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title: Usage in video
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### Debug a runnable
This video shows how a [runnable module](features_runnables) can be debugged in the [GDB commander](widgets_gdb_commander) widget.
The runnable calls a function that returns an `int`.
A breakpoint is put before returning and the result is patched in the CPU inspector by changing RAX value.
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### GIT gui as a tool
This video shows how to setup a [custom tool](widgets_custom_tools) that invokes `git gui` for the current project.
The trick is to set the tool's current working directory with a [symbolic string](features_symbolic_strings) that's expanded to the current project location.
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