This demonstrates a problem with "overlapping rowspan cells" (look at Table IV).

Table I: a regular 5x3 table

Table II: introduces rowspan=2 for cells (2,2) and (3,1), which 'overlap'.

Table III: is Table II, but cells (2,3),(3,3) and (4,3) now have 'empty' contents; the resulting table is still OK. Note that the height of (2,3) and (4,3) is determined by cells (2,1) and (4,2) respectively, whereas (3,3) has ~0 height since no 'effective' cell in the row has any definite height requirement (except for border, margin, padding if applicable).

Table IV: is Table III, but column 3 has been removed (cells (1,3),(2,3),(3,3),(4,3),(5,3)). This should mirror the first two columns of Table III (but currently does not).

Note that cells (2,2) and (3,1) are still in the correct position, with the same size as Table III, but that their cellspacing with (5,1) and (4,2) is absent.

Tested with Apr25, M4 and 1999051109 (win95, opt.) Dated: May 11 1999