diff --git a/README.md b/README.md
index 8197e82..7bae7ea 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,14 @@ Make SRT Caption Fast!!!! This is a fast and dirty javascript SRT caption tool.
 * Put video.mp4 in the same folder.
 * Put transcription (newline separated) to subs.txt in the same folder.
 * Open a web server
-* Run index.html
-* K: Timestamp the next line | L: Timestamp this line's end time | I: Scroll back one line | O: Scroll forward one line | Q: Make SRT File
+* Run index.html in Firefox (not Chrome)
+* Controls:
+** K: Timestamp this line's end time & next line's start time 
+** L: Timestamp this line's end time
+** I: Scroll back one line 
+** O: Scroll forward one line
+** U: Rewind 5 seconds
+** P: Forward 5 seconds
+** Q: Make SRT File
 
 Enjoy.