Tab Change Indicators

The colored tab corner gives information on whether a file is saved or not, and whether the file has been rendered in Cubase.
White

The file is not modified.

Green (Audio Editor only)

The file uses a decoded file format and is saved.

Red

The file has been modified and changes have not been saved yet.

Yellow

The file has been rendered in Cubase.

Unsaved changes indicator

When you have made changes to a file, an asterisk is displayed next to the file name until you save the file.