Simple footer

| cell1 | cell2
|=
| cell3 | cell4

Full footer

| cell1 | cell2
|=======|=======|
| cell3 | cell4

Footer with separator lines

| cell1 | cell2
|=======|=======|
| cell3 | cell4
|---
| cell5 | cell6
|---

Empty footer

| cell1 | cell2
|=