the horizontal alignment of the text content of each element
<captionEntry> unless overridden by the attribute align of the elements
<colspec>, <spanspec>, <caption> or <captionText>. The attribute can have one of the
following values:
- "left" (D) - the text is left justified
(quad flush left)
- "right" - the text is right justified (quad flush right)
-
"center" - the text is center justified (text is centered around the middle of the
column)