The GRID Clause
The GRID clause causes each character of the screen item to have a vertical
line on its left-hand side when the item appears on the screen. Each line
is within the character-position.
General Format

Syntax Rules
- The GRID clause can be used with any screen item.
- If the GRID clause is specified at group level, it applies to all suitable
subordinate elementary items.
- If this clause is used on a system that does not support characters with
vertical left-hand lines it has no effect.
General Rules
- The GRID clause causes each character of the screen item to have a vertical
line on its left-hand side when the item appears on the screen. Each line
is within the character-position.