Linux also implements dynamic clock instances as described below.
.SH DYNAMIC CLOCKS " (since Linux 2.6.39)"
In addition to hard coded SYS-V style clock ids, Linux also supports
-POSIX clock operations on certain character devices. Such devices are
-called "dynamic" clocks. Using the appropriate macros, open file
+POSIX clock operations on certain character devices.
+Such devices are
+called "dynamic" clocks.
+Using the appropriate macros, open file
descriptors may be converted into clock ids and passed to
.BR clock_gettime (),
.BR clock_settime (),
.B EINVAL
The
.I clockid
-specified is invalid for one of two reasons. Either the SYS-V style
+specified is invalid for one of two reasons.
+Either the SYS-V style
hard coded positive value is out of range, or the dynamic clock id
does not refer to a valid instance of a clock object.
.\" Linux also gives this error on attempts to set CLOCK_PROCESS_CPUTIME_ID