(Deletion): Describe `M-\' prefix argument.
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@ -148,10 +148,11 @@ enters Help instead, see @ref{DEL Does Not Delete}.
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The other delete commands are those which delete only whitespace
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characters: spaces, tabs and newlines. @kbd{M-\}
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(@code{delete-horizontal-space}) deletes all the spaces and tab
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characters before and after point. @kbd{M-@key{SPC}}
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characters before and after point. (With a prefix argument, it
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deletes them before point, but not after.) @kbd{M-@key{SPC}}
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(@code{just-one-space}) does likewise but leaves a single space after
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point, regardless of the number of spaces that existed previously (even
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if there were none before). With a numeric argument @var{n}, it
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point, regardless of the number of spaces that existed previously
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(even if there were none before). With a numeric argument @var{n}, it
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leaves @var{n} spaces after point.
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@kbd{C-x C-o} (@code{delete-blank-lines}) deletes all blank lines
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