I have just installed the CommentRSS module which produces RSS Feed links on Comment (and other) pages rather than the restricted number of RSS feeds normally available.
It would appear that the url I need to generate for the RSS feed is /crss/node/n where n is the node ID, for example on 'mysite/none/75' the RSS url should be 'mysite/crss/node/75.
I therefore need to edit the feed wrapper section of page.tpl.php to generate the required url (the default is /rss.xml). I assumed I could use variable $node to give me the node number but I get the error: undefined variable node.
Can you help? What should I do?

PS Superb Theme. Thanks for producing it.