The large cross extends over the row headers and column headers, which makes it easier to find or edit information at the correct position in tables, and reduces the risk of making mistakes.
The line shaped guide makes reading of text on web pages, PDF and text documents faster and easier. You can use the long line to underline text in 2 programs simultaneously (e.g. a PDF viewer and a text editor), or the small line for underlining specific words.
Underline the data in the left document of your screen in order to easily put it in your database on the right half, without having to point to the screen with your finger.