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supplementary group IDs (of the calling process) are returned in
.IR list .
It is unspecified whether the effective group ID of the calling process
-is included in the returned list. (Thus, an application should also call
+is included in the returned list.
+(Thus, an application should also call
.BR getegid (2)
and add or remove the resulting value.)
If
is set appropriately.
.TP
.BR setgroups ()
-On success, zero is returned. On error, \-1 is returned, and
+On success, zero is returned.
+On error, \-1 is returned, and
.I errno
is set appropriately.
.SH ERRORS
is less than the number of supplementary group IDs, but is not zero.
.TP
.B EPERM
-The calling process has insufficient privilege to call
+The calling process has insufficient privilege to call
.BR setgroups ().
.SH NOTES
A process can have up to at least NGROUPS_MAX supplementary group IDs