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The Sort rows by prototype function uses every non-text column in a spreadsheet to build and compare patterns; any columns you do not want to include in the pattern similarity analysis need to be removed before running the function. 

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• Select columns you want to remove
• Right-click on a selected column headers
• Select Delete from the pop-up menu
• Select () from the main command bar to save the modified spreadsheet

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• Select Tools from the main toolbar
• Select Discovery
• Select Sort Rows by Prototype... (Figure 2)
  

The Sort Rows by Prototype dialog will launch (Figure 3). 

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This dialog allows you to configure the pattern, or prototype, that all probe(sets)/genes will be compared to by Sort Rows by Prototype. 

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