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+* Mouse does not move properly.
+
+ Under MSDOS, the mouse moved according to the acceleration settings
+ in the mouse driver. Under SDL, the mouse is measured more directly,
+ and acceleration effects are not included. As a result, the mouse
+ moves slower under chocolate doom (it may be harder to quickly "whip"
+ the player round for example). This needs some investigation to see
+ how mouse acceleration was typically performed under DOS.
+
+* Sound may not set volumes correctly.
+
+ It is possible that volume of sound effects does not scale properly
+ with distance from the sound source. This needs further investigation.
+
+* Music plays back differently.
+
+ The DOS music code was not in the Doom source release as Doom used
+ a proprietary sound library. The mus <-> mid conversion mostly
+ works well but some patches are different. By closer examination
+ of which MIDI instruments are used by doom.exe, it may be possible
+ to get a closer conversion.
+