[Zope] Plone - links portlet

I realise that this is the Zope list and Plone is a seperate product but doesn't have a mailing list which I can easily access, so I'll ask a quick question if I may... I've done this in the past but can't figure it out any more. I want to insert a links slot on the left of a Plone screen. What do I need to add under Properties in the left_slots? I tried this but it isn't recognised:- here/portlet_links/macros/portlet Do these slot entries relate to files in the Products/CMFPlone directory? -- John