The lsp tag is ambiguous, and should probably not be used at all. Currently it has three synonyms, which means that if someone tags a question as "liskov-substitution" it will actually get the less-useful tag "lsp".
closed as off-topic by Martijn Pieters, mmyers, Undo, Shadow Wizard, Robert Cartaino♦ Sep 12 '14 at 21:21
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