This tool helps you compare two pieces of text to identify the differences between them on a line-by-line basis.

• Green lines (prefixed with '+'): Indicate lines that are present in the second text but not in the first.
• Red lines (prefixed with '-'): Indicate lines that are present in the first text but not in the second.
• Neutral lines (prefixed with two spaces): Indicate lines that are common to both texts.

It's useful for tracking changes in documents, code, or any text-based content. Note that this is a simplified line-by-line comparison; for more complex character-level diffing, specialized libraries are often used.