anti image hotlinking in .htaccess
 

I usally use the following to prevent image hotlinking from my entire site:

RewriteEngine on
RewriteCond %{HTTP_REFERER} !^$
RewriteCond %{HTTP_REFERER} !^http://(www\.)?mydomain.com(/)?.*$ [NC]
RewriteRule .*\.(gif|jpg|jpeg|bmp)$ - [F,NC]

how to modify the above if I want to allow image hotlinking for a certain folder, lets say:
mydomain.com/hotimages/

use another .htaccess file in that folder

Only put it where you want it:
mydomain.com/hotimages/

RewriteCond %{HTTP_REFERER} !^$
lets someone key in the URL

I remember now.
there is 1 work I should in the .htaccess in the folder I want to allow hotlinking in , what was it?