This patch makes the P-Switch, Throw Block Sprite, Key, Info Box and Light Switch drop normally and flicker when selected from the item box which in the original game wasn't possible.
Adds support for spawning a blue and gray P-Switch separately and also for the Throw Block Sprite. The Key sprite no longer spawns as a flying Key. The Info Box and Light Switch now fall and flicker but stop at a certain position in horizontal and vertical levels.
NOTE: This patch doesn't fix the glitched graphics in the item box; for that you will need the Item Box GFX Fix or the Item Box Special patch.