Understanding the comparison

Comparing file1.txt and file2.txt resulted in the following compare editor. The left side shows the contents of file1.txt and the right side shows the contents of file2.txt. The lines connecting the left and right panes indicate the differences between the files.

If more room is needed to look at the comparison, the editor tab can be double clicked to maximize the editor. 

Compare editor  

The numbered changes on the left side of the difference editor are as follows:

Initially the compare editor might seem a bit daunting but when simply working down the left side and focusing on the items marked as gray, and those items missing from the left side, it turns out not to be as tricky as it first seems.