<p>I use the <code>screen</code> command for command-line multitasking in Linux and I set my scrollback buffer length to a very large value. Is there a key combination to clear the buffer for a certain tab when I don't want it sitting there anymore?</p>

```
C-a C
```
will clear the screen, including the prompt
```
clear
```
(command, not key combination) will clear the screen, leaving a prompt
ETA: misread the original question; these will just clear the visible text, but will not clear the buffer!