I want to edit crontab. It is supposed to be Vi, but it's not, as you can see:

```none
root@euve252628:~# crontab -e

0

0 * * * * /var/www/vhosts/nevemind-what-webs/httpdocs/megacronstunde.php

?

:wq

?

```

Yes, it gave me a `?`. And why does it give me a zero? 

When I type a `q` and press `Enter` - it quits. I need to know how to save, because it's not classic Vi.