.LP
The function
.BR tcsetpgrp ()
-makes the process group with process group ID \fIpgrp\fP
+makes the process group with process group ID
+.I pgrp
the foreground process group on the terminal associated to
.IR fd ,
which must be the controlling terminal of the calling process,
and still be associated with its session.
-Moreover, \fIpgrp\fP must be a (nonempty) process group belonging to
+Moreover,
+.I pgrp
+must be a (nonempty) process group belonging to
the same session as the calling process.
.LP
If