This is the contents of Bank 5 in a ROM map form.

Bank     :5
Contents :Screen Transition Data
Range    :0x14000-0x17FFF

0x142E5-0x142E6 - Screen Transition Pointer 0
0x142E7-0x142E8 - Screen Transition Pointer 1
0x142E9-0x142EA - Screen Transition Pointer 2
 etc.
0x146E3-0x146E4 - Screen Transition Pointer 511 (invalid??) 

0x146E5-0x146E5 - Screen Transition Code 0 (Does nothing)
0x146E6-0x146EC - Screen Transition Code 1
0x146ED-0x146F3 - Screen Transition Code 2
 etc.