Kathrein Twin-PVR Satellite UFS 821si - Manual (Page 117)

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PVR Manager (USB Tool)
You can use this function to add one or more channels you previously
selected to the desired Favourite list.
Click on the channel you want to add and hold the mouse button down.
Now drag the channel with the mouse onto the Favourite list to which
you want to add it.
You can also select multiple channels to add by holding down the
Ctrl key while selecting (see example screenshot).
Add to Favourite
You can use this function to renumber the channels in their current sort
order.
Renumber
You can use this function to delete selected data (channels, Favourite
lists etc.).
Delete
You can use this function to switch between the TV and radio channel
listings.
Radio