When you insert a table in an XHTML document, an HTML type of table is added. The layout of
an XHTML table includes a colspecs section that allows you to
easily configure some properties. For example, you can change the value of column widths
(@width attribute) or the text alignment (@align attribute).
Although they appear as part of the Author mode, the colspecs link and its
controls will not appear in your output. They are just there to make it easier to adjust how
the columns of your table are formatted.
Oxygen XML Author Eclipse plugin reports table layout problems that are detected in manual or automatic validations. The types of errors that may be reported for XHTML table layout problems include:
@colspan, @rowspan, or
@span attributes are not numeric.