@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