| Terminology |
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| – | A pointer
points from here (where it is) |
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| to there
(somewhere else) |
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| – | A ref does
the same, but has some |
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| content |
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| – | A link
points to two or more places and |
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| asserts some
(linking) relation |
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| between them.
Its own location is not |
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| significant |
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| – | An anchor
exists only to be pointed at |
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