Returns a traceback of the current function call stack as a string. In other words, a description of the functions that have been called up to this point. The level parameter specifies what level of the call stack to consider, with 1 being the call of debug.traceback itself, 2 being the call of the function calling debug.traceback (if there is one) and so on.

During debugging, debug.traceback answers the question “how did my code get here?” much like an error stack trace, but without stopping the execution of the script. See the example below with several function calls: c() calls b(), b() calls a(), and a() calls debug.traceback.

local function a()
	print(debug.traceback("Specific moment during a()"))
end

local function b()
	a()
end

local function c()
	b()
end

a()

The above code would produce an output similar to (but not guaranteed to be exactly like) the following:

Specific moment during a()
ServerScriptService.Script:2 function a
ServerScriptService.Script:6 function b
ServerScriptService.Script:10 function c
ServerScriptService.Script:13

Opens a microprofiler label.

Closes the top microprofiler label.