+.SH ATTRIBUTES
+For an explanation of the terms used in this section, see
+.BR attributes (7).
+.TS
+allbox;
+lbw20 lb lb
+l l l.
+Interface Attribute Value
+T{
+.BR forkpty (),
+.BR openpty ()
+T} Thread safety MT-Safe locale
+T{
+.BR login_tty ()
+T} Thread safety MT-Unsafe race:ttyname
+.TE
+.sp 1
+.SH CONFORMING TO
+These are BSD functions, present in glibc.