Questions about the use of whitespace characters

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22
votes
4answers
26k views

Is it ever correct to have a space before a question or exclamation mark?

In written English (mainly online) I often come across sentences ending with a question or an exclamation mark with a space before it. Is it always just an error or a typo? Or there are cases when it ...
183
votes
15answers
23k views

How many spaces should come after a period/full stop?

In the past — or at least, when I was in elementary school — periods/full stops were followed by two spaces. Lately, it's become more and more common to see just one space. In the modern ...
92
votes
4answers
8k views

Why is “cannot” spelled as one word?

Why is “cannot” spelled as one word whereas other similar constructions such as “do not,” “will not,” “shall not,” “may not” and “must not” are spelled as two words (unless they are contracted as ...
41
votes
8answers
14k views

Is it “alright” or “allright”?

In practice I find both spellings being used. From a logical point of view, "allright" (as in: "all's right — everything is fine") seems correct. However, I recall hearing that "alright" is the ...
7
votes
2answers
3k views

When is it appropriate to use non-breaking spaces?

I started using non-breaking spaces between a number and a unit of measure (10_ft), and within a name (Dr._John_Smith). I like the "look" of using non-breaking spaces to prevent titles from wrapping, ...
13
votes
6answers
15k views

Should I write “comma/period” or “comma / period”?

I usually put a space before, and after / when indicating alternatives, such as in the following sentence. We review a module / theme per user. Is it correct, or should I re-write the sentence ...
29
votes
1answer
26k views

“Sign up” vs. “signup”

When we have a button on a website for creating an account, should it say "sign up" or "signup"? I see "sign up" in most places, but which is the correct one?
29
votes
7answers
10k views

Which is correct: “Filename”, “File Name” or “FileName”?

Which is correct: "Filename", "File Name" or "FileName"?
11
votes
3answers
15k views

Should there be a space between name initials?

In writing authors' initials in research papers (either in the author by-line or the bibliography), should there be a space between intials? R.P. Feynman R. P. Feynman What's the preferred way ...
1
vote
1answer
4k views

“Can not” vs. “cannot” [duplicate]

Is there a difference in meaning and/or connotation between "can not" and "cannot"? I have read and seen both used interchangeably, but I know people who argue for a slight difference in meaning. ...