How to read a .diff file when you purchase an X-Cart module

Third Party Integration, X-Cart Tutorials

Diff is a comparison utility that’s very useful when you upgrade or modify your web application pages. If you notice carefully, there’re some modules that come with readme.txt and patch.diff files. Open the .diff file in a notepad or Notepad++ (better), you can see each line in different colors for different purposes, meaning, & usage.

*** /path/to/original_file   ''server_timestamp''
--- /path/to/new_file        ''server_timestamp''

@@ -l,s +l,s @@ optional section heading

Here’s the explanation of the .diff file:
How to read XCart module diff file