Working with PTC Mathcad Prime > Areas > To Collapse and Expand an Area
  
To Collapse and Expand an Area
1. To collapse an area, click the icon on the left side of the area.
A to the left of a horizontal line marks the presence of a collapsed area.
Collapsed areas are not printed.
2. To expand an area, click the icon.
The and icons are not printed.
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Areas that have their display state locked must first be unprotected before you can re-expand or re-collapse them.