Sheet Line and Rectangle
In Edit Sheet Def, click Line or Rectangle.
Fixed lines and rectangles are Sheet Field Types that can be added to a sheet background.
When editing a sheet, click Line or double-click a Line field from the Fields list.
When editing a sheet, click Rectangle, double-click a Rect field from the Fields list, or double-click the rectangle from the sheet.
Rectangles are typically used to create checkboxes, however to mark the checkbox electronically, a Checkbox or Radio Button is needed.