| To unmark specific updates that you do not want to download, select the updates from the list. |
| Click on a marked card again to unmark it. |
| To unmark channel select it and press YELLOW button again. |
| The user can mark or unmark corresponding checkboxes in the Properties dialog, but it doesn't really affect the attribute state. |
| If you unmark all days, alarm repetition switches off. |
| To prevent aptitude from removing some packages that were pulled in through dependencies, you need to manually unmark them as auto packages. |
