### link

#### link end1 end2 <breed> end1 end2

Given the who numbers of the endpoints, reports the link connecting the turtles. If there is no such link reports `nobody`. To refer to breeded links you must use the singular breed form with the endpoints.

    ask link 0 1 [ set color green ]
    ;; unbreeded link connecting turtle 0 and turtle 1 will turn green
    ask directed-link 0 1 [ set color red ]
    ;; directed link connecting turtle 0 and turtle 1 will turn red

See also patch-at.

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