+
+When describing new behavior or new flags for a system call or library
+function, be careful to note the kernel or C library version that introduced
+the change. The preferred method of noting this information for flags is as
+part of a \fB.TP\fP list, in the following form (here, for a new system call
+flag):
+.RS 22
+.TP
+ \fBXYZ_FLAG\fP (since Linux 3.7)
+Description of flag...
+.RE
+.IP
+Including version information is especially useful to users who are
+constrained to using older kernel or C library versions (which is typical in
+embedded systems, for example).