Problem is, if the table has merged cells, there is no formal means to
determine its row structure and thus no way to determine, through code, what
sorting it actually means. Consider this case:
Start with a table contain four rows by five columns.
In row 1, merge cells 1 and 2.
In row 2, merge cells 2 and 3.
In row 3, merge cells 3 and 4.
In row 4, merge cells 4 and 5.
Now align the cell boundaries. It *looks* like a four by four table, but it
isn't. What would you want to have happen if you told Word to sort by column
2? Worse, supposing you repeat the above exercise merging vertically instead
of horizontally...
