Simple header

cell1 cell2
cell3 cell4

Full header

cell1 cell2
cell3 cell4

With alignment and superfluous alignment defs

default left center right default
cell1 cell2 cell3 cell4 cell5

With leading sep line

cell1 cell2
cell3 cell4

Multiple bodies

cell1 cell2
cell3 cell4
cell5 cell6

Sep line with tab

right center
cell1 cell2
cell3 cell4