Control tokens like \4 in CWEB

[Andreas Scherer]

I'm terribly sorry, but Thunderbird is just bad. It shows quoted text
with '>' in blue, and then scraps the line wrap. The middle section
should have been:

> The CWEB manual doesn't tell me much, and I was wondering what \1-\9 
> do and what a control token is?
Please check out "texdoc web". This should open 'webman.pdf'. Then
consult section "Control codes".

Best, Andreas