.CD "true, false \(en exit with the value true or false"
.SX "true"
.SX "false"
.FL "\fR(none)"
.EY "while true" "List the directory until DEL is hit"
.br
	do ls \(enl
.br
	done
.PP
These commands return the value
.I true
or
.I false .
They are used for shell programming.



.SP 1.5