Number of Backup Levels: Here you define the number of backup generations.

Save automatically: If this checkbox is checked, the software automatically creates backup copies of the project file. You can set the number of backup files in the field Number of backup levels from 1 to 9. As soon as the last file is written, in the next run, the first file is overwritten with the next saved file thus being lost! You can adjust the desired interval for the backups in the field interval between one and 60 minutes. The generated backup files have the number of the backup in the file extension, for example l.dd1. The higher this number is, the older is the file. If you want to use such a file in the Toolbox4 software again, you have to change the extension back to .ddp beforehand.

Hide sources without name in audio and logic source trees: This option affects the windows Audio Sources and Logic Sources. If checked, all sources are hided, the labels of which have been totally deleted when configuring the DSP Frame I/O. (see also DSP Frame I/O — Configuring the DSP Frame)

Select next output routing after assign. Activate this checkbox to work faster when defining the output routing: In this case, the Toolbox4 software automatically switches to the next output when assigning the audio signals to the outputs – in the list of outputs as well as in the audio signal list in the Audio Sources Window. (see also Output Routing )