INT A4 U - Right Hand Man - API
AH = function number (v3.3 supports functions 00h-52h)
Return: CF set on error
CF clear if successful
Program: Right Hand Man is a TSR desk-top utility originally by Red E Products
which has evolved into Futurus Team
Note:   this interrupt is only hooked while popped up

See also: 2FA4E0

A4 - Right Hand Man - API