diff -r 287d82efe5f2 sys/man/1/nintendo
--- a/sys/man/1/nintendo	Mon Jan 13 23:22:35 2020 +0000
+++ b/sys/man/1/nintendo	Mon Jan 27 22:30:13 2020 +0100
@@ -55,15 +55,25 @@
 .I snes
 are emulators for the Nintendo Game Boy and Game Boy Color (GB and GBC), Nintendo Game Boy Advance (GBA), Nintendo Entertainment System (NES), and Super Nintendo Entertainment System (SNES).
 They execute the romfile given as an argument.
-The \fBz\fR, \fBx\fR, \fBa\fR, \fBs\fR, \fBq\fR, \fBw\fRreturn and shift keys correspond to B, A, Y, X, L1, L2, Start and Select, respectively.
+The \fBz\fR, \fBx\fR, \fBa\fR, \fBs\fR, \fBq\fR, \fBw, \fRreturn and shift keys correspond to B, A, Y, X, L1, L2, Start and Select, respectively.
 Other keys:
 .TP
+F1
+Enter framestep mode.  Every key press will advance one video frame at
+a time until Esc is pressed.
+.TP
 F5
 Save the current state in \fBgb.save\fR / \fBgba.save\fR / \fBnes.save\fR / \fBsnes.save\fR.
 .TP
 F6
 Load the current state from \fBgb.save\fR / \fBgba.save\fR / \fBnes.save\fR / \fBsnes.save\fR.
 .TP
+F12
+Toggle the profiler.
+.TP
+`
+Reach speeds no man has reached before.
+.TP
 Esc
 Pause the emulator.
 .TP