Correct version of “Space Bar”

Is it acceptable to spell it “spacebar” or must the word be spelled with a space in it? I’m using it to refer to a keyboard shortcut in my application’s documentation.

Further, should it be capitalized? And if split into two words, should both be capitalized?

Answer

Definitely not capitalized: a Space Bar would be something like a Mars Bar or Milky Way, but less dense (facetious confectionery reference).

But whether you include a space is up to you. Originally so: the space bar is just below the X key, which requires a space to avoid confusion. However, spacebar is common enough not to be ambiguous by now.

Attribution
Source : Link , Question Author : Dov , Answer Author : Tim Lymington

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