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Howto get an article's title from its url

I'm storing article titles in a table, then when I iterate over them, I would like to create a link to them, but the link text should be the title not the url (which is availble inside dtml-in). Kinda like what the "older posts" feature does in squishdot, except that its getting its values from a method whose source I can't seem to find
I would like to do something like:

title of article pointed to by url here

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