User Help > Managing Source Files as Members > Comparing Revisions > To compare two text files in the GUI
  
To compare two text files in the GUI
1. Select File > Compare Files. The Compare Files dialog box displays.
2. Using the Browse buttons for each field, select the files you want to compare.
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The dialog box keeps track of the last 10 files specified in both fields.
3. Click OK. Visual Difference launches and displays the two files side-by-side, highlighting the differences between them, or Windchill RV&S informs you there are no differences between the files.