True, but those are one of the things I always look, together with:
<space><space>
<space>.
<space>!
<space>:
<space>,
..
,,
<space>=
=<space>
<space>\
&<space>
(<space>
<space>)
"<space>
<space>"
And with Microsoft Word I always search for "<space>^p" to find spaces at the end of a line... So you see, many small technical errors can easly be searched for