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diff --git a/system/schedtool/README b/system/schedtool/README
index f040c5dc53..71a5c61752 100644
--- a/system/schedtool/README
+++ b/system/schedtool/README
@@ -1,13 +1,15 @@
Schedtool interfaces with the Linux CPU scheduler.
-It allows the user to set and query the CPU-affinity and nice-levels of
-processes, as well as all scheduling policies, like batch or real-time
-(RR/FIFO) classes and their priorities. It can be used to avoid skipping
-for A/V-applications, to lock processes onto certain CPUs on SMP/NUMA
-systems, or to adjust nice-levels of lesser important jobs to maintain a
-high amount of interactive responsiveness under high load.
+It allows the user to set and query the CPU-affinity and nice-levels
+of processes, as well as all scheduling policies, like batch or
+real-time (RR/FIFO) classes and their priorities. It can be used to
+avoid skipping for A/V-applications, to lock processes onto certain
+CPUs on SMP/NUMA systems, or to adjust nice-levels of lesser important
+jobs to maintain a high amount of interactive responsiveness under
+high load.
-All special scheduling classes of the -ck kernel patchset are also supported.
+All special scheduling classes of the -ck kernel patchset are also
+supported.
Certain modes (as of this writing: SCHED_IDLEPRIO and SCHED_ISO) need a
patched kernel; see the INSTALL file for details.