diff --git a/docs/help/in/flushbuffer.in b/docs/help/in/flushbuffer.in
new file mode 100644
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+++ b/docs/help/in/flushbuffer.in
@@ -0,0 +1,6 @@
+
+@SYNTAX:flushbuffers@
+
+If either write_buffer_mins or write_buffer_kb have been set an immediate
+write of the buffers is forced.
+