Function input_three_args:
Defined in module m_input (file: /secure/modules/m_input.c)

Get three one-word arguments and call a given function pointer with them.
Some or all of the arguments may be passed in initially; if they are not
all present, then the prompts are used to ask for the values.

Prototype:
protected varargs nomask void input_three_args(
    string arg1_prompt,
    string arg2_prompt,
    string arg3_prompt,
    function fp,;
