Handle periodic backups during a layout editing session.
The crashbackups procedure enables or disables the
periodic saving of crash recovery backup files.
crashbackups or crashbackups start sets the
timer for the first periodic save. After the timer times
out, backup file is generated and written in the system
temporary directory, and the timer is reset. By default,
the backup interval is 10 minutes (600000 msec). The
interval can be changed by setting the value of Tcl variable
$Opts(backupinterval) to the interval value in msec.
crashbackups stop removes the timer callback and thus
prevents further writing of backup files. Note that if
crash recovery is stopped or started multiple times during
a session, the same filename is used to save the data.
crashbackups is implemented as a Tcl procedure in the
"tools.tcl" script file. It calls the magic command
Last updated: December 7, 2005 at 3:15pm