Possible Duplicate:
Punctuation around abbreviations
When a sentence ends with an abbreviation, should there be two periods or one?
Welcome to ACME Inc. We are glad to have you on board.
Welcome to ACME Inc.. We are glad to have you on board.
I would assume that only one is appropriate because I've never seen two used (and it looks awful), but if so, does the period "belong" to the end of the sentence or the abbreviation? I ask because I came across this while writing HTML, and the last word needs to be a link, so I wasn't sure if the period belongs within it.
Welcome to ACME Inc. We are glad to have you on board.
Welcome to ACME Inc. We are glad to have you on board.
Welcome to ACME Inc.. We are glad to have you on board.
Usually a link should not include punctuation at the end of the sentence, but should include it as the end of an abbreviation in the middle or beginning of a sentence. Which of these links seem more appropriate?
If only one period is used, who "owns" the period: the abbreviation or the sentence?
