v7 man page for acct

ACCT(5) 							File Formats Manual							   ACCT(5)

NAME
       acct - execution accounting file

SYNOPSIS
       #include <sys/acct.h>

DESCRIPTION
       Acct(2)	causes	entries to be made into an accounting file for each process that terminates.  The accounting file is a sequence of entries
       whose layout, as defined by the include file is:

       If the process does an exec(2), the first 10 characters of the filename appear in ac_comm.  The accounting flag	contains  bits	indicating
       whether exec(2) was ever accomplished, and whether the process ever had super-user privileges.

SEE ALSO
       acct(2), sa(1)

																	   ACCT(5)