Buffering in Crystal

Area where you can buffer	| How to frame perfect / fast scroll
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Choose action in fight		| 1) Hold A, B, down, or right when the textbox is cleared/blank (only turn 1 of each Pokemon)
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Teaching a move			| 1) Before "1, 2 and ... Poof!" appears, hold B and keep it until this textbox is fully displayed
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Shops				| 1) Keep any direction hold after "Buy" or "Sell" is chosen to fast scroll
				| 2) When choosing a quantity, hold Up or Down before the number textbox appears
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Inventory			| 1) When the Bag is opening (white screen), hold a directionnal input

Received TM / HM		| 1) As soon as the final note of the jingle is heard, keep A or B pressed down

Using a Repel			| 1) When "@trainername used a REPEL." is displayed entirely, hold A or B

After evolving w/ Rare Candy	| 1) When Feraligatr's cry starts, hold A or B to scroll "Congratulations! Your ..." frame perfectly

Talking to Jasmine		| 1) In Lighthouse #2, textbox "AMPHY, how are you feeling?"
				     As soon as the "n" in "feeling" is displayed, hold A or B

Leveling up			| 1) As soon as the stats display, hold A or B

Pokemon Center			| 1) Once "We hope to see you again" is displayed, hold A or B