separated by spaces. A variable with zero elements yields the empty string.
.HP
.BI `{ command }
+.HP
+.BI ` "split " { command }
.br
.I rc
executes the
.B $ifs
is not otherwise set, its value is
.BR "'\ \et\en'" .
+In the second form of the command, split is used instead of
+.BR $ifs .
.HP
.BI <{ command }
.HP