* The use_pty sudoers option can be used to force a command to be
run in a pseudo-pty, even when I/O logging is not enabled.
+ * On some systems, sudo can now detect when a user has logged out
+ and back in again when tty-based time stamps are in use. Supported
+ systems include Solaris systems with the devices file system,
+ Mac OS X, and Linux systems with the devpts filesystem (pseudo-ttys
+ only).
+
* The passwd_timeout and timestamp_timeout options may now be
specified as floating point numbers for more granular timeout
values.