Help!I have Error in Arduino Mega 2560 Documentation

I want to configure Port A as inputs. According to the schematic for the Mega board
(http://arduino.cc/en/uploads/Main/arduino-mega2560-schematic.pdf) the pin mapping shows PA1 to be connected to PIN 23 on the silkscreen mapping on the MEGA board.

On the PinMap2560 page (http://arduino.cc/en/Hacking/PinMapping2560), the pin mapping shows PA1 connected to PIN 15, which I believe is incorrect(Should be PIN 23). And by way of clarification, PINxx designations in this text refer to the silkscreen pin designations on the Arduino Mega board.

I did a continuity check from pin 77 on the Mega2560 IC to silkscreen PIN 23 ( on the board, and it checks.)
Would someone pls verify this?

I don't see the thing you're reporting. For me, when I look at that pin mapping table I see this:

77 PA1 ( AD1 ) Digital pin 23

Would you mind clarifying so I can understand?