To enter a table, use the following syntax:

|| lines must start and end || with double vertical bars || ('|') ||
|| cells are separated by || double vertical bars || ('|') ||
|||| you can span multiple columns by || starting each cell ||
|| with extra cell |||| separators ||
|||||| but perhaps an example is the easiest way to see ||
lines must start and end with double vertical bars ('|')
cells are separated by double vertical bars ('|')
you can span multiple columns by starting each cell
with extra cell separators
but perhaps an example is the easiest way to see

Advanced tables

For full documentation on table formatting, see FormalFormattingRules/Tables. But here is an example showing most of the possibilities.

||{Tb=3,Rs=background-color: yellow} 1||{w=4} Interesting? ||{B,c}Bold and centered ||{I,r} Right, italic||
|| 2||{w=3,b} Bottom || Ordinary ||
|| 3||{w=2,t} Top ||
|| 4||
1 Interesting? Bold and centered Right, italic
2 Bottom Ordinary
3 Top
4