Force https
RewriteEngine On
RewriteCond %{HTTPS} !=on
RewriteRule ^/?(.*) https://%{SERVER_NAME}/$1 [R,L]Rewriting
RewriteBase /tround/
RewriteRule "^([a-z]+)$" "tround.php?$1" [END] 404
Note that path to error document must be absolute path relative to root.
ErrorDocument 404 /path/to/index.phpAnything else just returns the text given
ErrorDocument 404 <html><h1>Error</h1></html>