Labelmark 6 - Trim Vertical Margins - Make characters take up complete label height
Body
Trim Vertical Margins
Text inside a text object maintains a small distance between the text and the upper and lower sides of the text object boundary box. Removing this space enables you to move text closer to lines or graphics, or inside rectangles.
In this example, 37 pt font is the largest possible font size.
Selecting Trim Vertical Margins allows you to increase the font size.