how to delete the content of a channel

[CircoAbierto]

Hi

I know that it is a simple question.
But how can I delete a content of a channel?
I searched all the software and I din't find the way to delete it, just replace for another file/content or add a new file/content in an empy box/channel.
I just want to delete all the unused channels.

[pifco]

Y'all just hold alt and press the letter/number of the clip.

That better?

[CircoAbierto]

Thanks a lot for the tip Pifco.
The "help" of this software isn't very complete.

[continuity-B]

From the manual

You can also activate a channel by clicking on it. To configure a channels' properties, right-click it. To empty a channel press ALT & 'channel shortcut'. (so ALT & 1 clears the top left channel)