How do you make apache stop following rules once the first is matched up inside a .htaccess file?

I have added the next to the foot of the file:

RewriteRule ^(.+)$ index.php [QSA,L,NC]

However, it appears to become missing other rules above it and merely uses that rule. I wish to make use of the rule above like a catch all for just about any Web addresses not matched up formerly.

Is possible?

the guidelines above must have [L] last directive