hitespaces at the opposite end of your text: Add two spaces on the left to align right, two spaces on the right to align left and two spaces at least at both ends for centered text.
... r documents by either indenting them by at least two spaces (like used for the previous examples) or b... r ''%%<file>%%''.
This is text is indented by two spaces.
<code>
This is preformatted code all spa... by this source:
This is text is indented by two spaces.
<code>
This is preformatted code all
