PTC FlexPLM Fundamentals > Bill of Materials > Viewing, Creating, and Updating the BOM > Working in the BOM Editor > Working with Sections > Expanding and Collapsing Sections
  
Expanding and Collapsing Sections
Within any section, you can expand or collapse both that section as well as the columns within that section. To expand or collapse a section, click the plus or minus sign to the left of the section name. The button appears as a minus sign when you can collapse the section, and as a plus sign when you can expand the section.
You can also expand or collapse variations for the entire BOM using the plus or minus sign to the right of the Destinations column. This action expands or collapses information across all sections with one click.
Each BOM section includes a section table that contains a separate row for each component of that section. The column header row appears at both the top and the bottom of the section table. This allows you to easily see which column you are in when working with sections of the BOM that have a large number of materials, without requiring you to scroll back to the top of the section.