INT 16 - Shamrock Software EMAIL - SPECIFY COMMAND-WORD FOR USER FUNCTION AX = 4503h DL = port number (01h = COM1) DH = maximum execution time in clock ticks (00h = 5 seconds) ES:BX -> ASCIZA NUL-terminated ASCII string. The ASCIZ string "ABC" consists of the four bytes 41h, 42h, 43h, and 00h. Unless otherwise specified, maximum lengths given in the interrupt list do not include the terminating NUL. string with new user command-word Return: AX = 4D00h if EMAIL installed on specified port Notes: a single user command (consisting of only uppercase letters and digits) may be defined, and remains valid until it is overwritten or the EMAIL program terminates; the user command must be activated by calling AX=4504h at least once. an existing command word may be redefined with this function SeeAlso: AX=4504h,AX=4505h