How do I map the numeric keypad keys?

First make sure that the numeric keypad keys are passed to Vim. Next, you can use the following command to map the numeric keypad keys:

    :map   

where, <kSomething> can be kHome, kEnd, kPageUp, kPageDown, kPlus, kMinus, kDivide, kMultiply, kEnter, etc. For more information, read: key-codes terminal-options