used in ol and ul tags to set the type of numbering. For ol tags, allowable values are "1" (default), "a", "i", "A", "I".
For ul tags, allowable values are types such as "disc" or "square".
start=
used in ol tags to set the starting value of the list. The start value should be set in arabic numbers (1, 2, 3 etc)
no matter what type of numbering you are using.
rowspan=
used in td tags to cause a cell to span multiple rows.
colspan=
used in td tags to cause a cell to span multiple columns