A printer MUST support the values left, right, and center for the align attribute of the td, th, and tr elements
Tests for assertions 56  
Table 1: Values of align for td
| A Single Column | 
|---|
| left | 
| right | 
| center | 
Table 2: Values of align for th
| A Single Column | 
|---|
| left | 
|---|
| right | 
|---|
| center | 
|---|
Table 3: Values of align for tr
| A Single Column | 
|---|
| left | 
| right | 
| center |