@menu
* ADD DOCUMENT:: Add documentary text to the active file.
+* CACHE:: Ignored for compatibility.
* CD:: Change the current directory.
* COMMENT:: Document your syntax file.
* DOCUMENT:: Document the active file.
* INCLUDE:: Include a file within the current one.
* INSERT:: Insert a file within the current one.
* PERMISSIONS:: Change permissions on a file.
+* PRESERVE and RESTORE:: Saving settings and restoring them later.
* SET:: Adjust PSPP runtime parameters.
* SHOW:: Display runtime parameters.
* SUBTITLE:: Provide a document subtitle.
Each line of documentary text must be enclosed in quotation marks, and
may not be more than 80 bytes long. @xref{DOCUMENT}.
+@node CACHE
+@section CACHE
+@vindex CACHE
+
+@display
+CACHE.
+@end display
+
+This command is accepted, for compatibility, but it has no effect.
+
@node CD
@section CD
@vindex CD
@display
HOST.
+HOST COMMAND=['command'...].
@end display
@cmd{HOST} suspends the current PSPP session and temporarily returns control
to the operating system.
This command cannot be used if the SAFER setting is active.
+If the COMMAND subcommand is specified, as a sequence of shell
+commands as quoted strings within square brackets, then PSPP executes
+them together in a single subshell.
+
+If no subcommands are specified, then PSPP invokes an interactive
+subshell.
@node INCLUDE
@section INCLUDE
This command cannot be used if the SAFER setting is active.
+@node PRESERVE and RESTORE
+@section PRESERVE and RESTORE
+@vindex PRESERVE
+@vindex RESTORE
+
+@display
+PRESERVE.
+@dots{}
+RESTORE.
+@end display
+
+@cmd{PRESERVE} saves all of the settings that @cmd{SET} (@pxref{SET})
+can adjust. A later @cmd{RESTORE} command restores those settings.
+
+@cmd{PRESERVE} can be nested up to five levels deep.
+
@node SET
@section SET
@vindex SET