Curtis DVD8009 - Manual (Page 12)

2X.(2)Press "zoom" a second time ,the picture will be enlarged 3X.(3)
Press "zoom" a 3rd time ,the picture will be enlarged 4X.(4)Press "zoom"
a 4th time ,the picture will return to normal size.
A-B REPEAT
a. During playback press a first time 'A-B' to set the Starting Point A
b. Press 'A-B' a second time to set the Ending Point B and the player will
repeatedly play the part between Point A and Point B.
C. Press A-B a third time to cancel A-B repeat and resume normal playback.
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