@DrChiper: The spell check most definitely is aware of tags. In fact it will only check text in tags (other than script and style) and in the attributes alt and title (which are used for tooltips/descriptions). If you are getting words from places other than tags, then it is likely a bug, attach the file.
@theducks: That's what the user dictionaries are for.
@BR: I suggest setting up a user dictionary with your abbreviations. The correct solution for not flagging some words is not to simply ignore an entire file.
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