Is it possible to create tables that have column headings over multiple subheadings? In Excel, you accomplish this using "merge cells". However, it looks from the documentation that merged cells are only possible at the end of rows? (http://doc.tiki.org/Wiki-Syntax-Tables#Spanning_Across_Columns)
This is the effect that I want:
| Category1 | Category2 |
| Sub1a | Sub1b | Sub2a | Sub2b |
| 1 | 2 | 3 | 4 |
Can it be done?