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sys-tell(2) - Unix First Edition Manual Page
11/3/71SYS_TELL (II)

NAME tell -- get file pointer
SYNOPSIS (file descriptor in r0)sys tell; offset; ptrname / tell = 20.

(value returned in r0)
DESCRIPTION The file descriptor refers to an open file. The value returned in r0is one of:

if ptrname is 0, the value returned is offset; if ptrname is 1, the value is the currentpointer plus offset

if ptrname is 2, the value returned is thenumber of bytes in the file plus offset.
DIAGNOSTICS The error bit (c--bit) is set if the file descriptor is unknown.
BUGS Tell doesn't work. Complain if you need it.
OWNER ken, dmr