Functions written with GCScript may include calls to other written functions. As you use the debugger to step through nested levels of function calls, the stack view shows a trail of the call levels. The first (top) row indicates currently-executing code, which you can also see in the debugger’s main view. The second row indicates the place from which the current function was called; this is where the execution of the script will resume when the current function returns. Likewise, the third row indicates the place from which the second-row function was called, and so on.