Use the backquote character (`) to find a variable or function of global scope:
(dbx) print `item
A program can use the same function name in two different files r compilation modules. In this case, you must also qualify the function name to dbx so that it registers which function you will navigate. To qualify a function name with respect to its file name, use the general purpose backquote (`) scope resolution operator.
(dbx) func`filename`function-name