HPTIMEOUT   A variable used by the CI that lets a user set timed CI
reads on $STDIN. A positive value indicates the number
of minutes the CI waits for input. If a timed CI read
expires, the session is logged off. The initial value
is zero, which means no timed reads. The maximum value
is 546 minutes. Note: HPTIMEOUT may be restricted if
the HPSYSTIMEOUT variable is set. See HPSYSTIMEOUT and
the Security Monitor for more information.
Type= Read/Write, Integer