Most of the links_tags for the templates are viewable from the admin screen when you Edit Templates. Each template edited will present a link to a list of tags available.
Another place to look is in site_html.pl. Most of the subroutines have a list of variables available. Just take the variable listed and mentally convert it to a links_tag. For example, in sub site_html_category, the $title_linked variable would be <%title_linked%> in the category.html template.
I cut and pasted the variables listed in site_html.pl into the corresponding site_html_templates.pl subroutine for easier reference. I didn't change them from $ variables to links tags, though, because in the script, they are still $variables.
I hope this helps.
[This message has been edited by Bobsie (edited June 05, 1999).]