1 files changed, 3 insertions, 0 deletions
diff --git a/htop.1 b/htop.1
index 45bb4eb3..9dd36e0b 100644
--- a/htop.1
+++ b/htop.1
@@ -77,6 +77,9 @@ If none is tagged, sends to the currently selected process.
 .B F10, q
 Quit
 .TP
+.B a (on multiprocessor machines)
+Set CPU affinity: mark which CPUs a process is allowed to use.
+.TP
 .B u
 Show only processes owned by a specified user.
 .TP