Item Index:

1. Close Tab: Closes the tab that matches the "x" you pressed.
2. Tab Header: Displays an image on the left that represents the type of file, if it's a Script (.l2s) then a sheet of paper will be displayed, if it is a Class (.l2c) then a green circle with a quarter of it painted in yellow will be shown. On the middle you will find the name of the file you're editting and on the right is the Close Tab Button.
3. Selection: The color of selections may be changed from the Settings panel.
4. Line Count: Automatically updated, it displays the Line Number of the file where you are writting at.
5. Line Highlight: Paints a rectangle over the area where you are working, for you to know always where the caret is. Multiple-Lined if you have a selection.