"3. Remember maximum current limit conditions for input current:
- per pin: 10mA
- per 8-bit port: P0 = 26mA, P1/2/3 = 15mA
- per all output pins: 71mA"

That info will be specific to one specific varaint.
Dennis didn't mention any specific variant, so these vales may well be irrelevant for him!

For specific device rating like these, you must always refer to the Data Sheet for the device in question!