Tinderbox is not primarily intended as a repository; use DEVONthink Pro or Yojimbo for that.  You can drag items from DEVONthink right into Tinderbox to link to them.

Or, use the $File attribute to link a Tinderbox note to any file.

Thank you for replying and helping out!

Any chance on a couple of words marking the 'differences' - 'similarities' of TB and Storyspace? Or maybe a pointer to an enlightening article or thread?

As for the $File: how / where do I add or edit this?
I've tried creating a note in map view, then drag'n drop a Devonthink item on top of it, but nothing seems to happen..
Right click on the note > get info shows me a list but I couldn't find $File amongst them.
Searching through the inspector did not reveal $File either.

Any chance on some example or tutorial?
Thank you!

Thanks for your prompt reply!
Is it possible you copied the same url for Properties Inspector?
(Maybe for other readers - I did find it on TbRef)

I was partly able to get solution #3 going, created the $URL attribute, which became visible in the note text pane. I pasted a DT item link in but it did not work.

I'll need some more experimenting time after which I'll post back in the next couple of days.
Thanks again!

PS Sorry, it seems I can not post links yet..  

Anyone can add links to their forum posts (to webpages, images, files, etc. as long as at a valid web URL).

Any full URL (with http etc.) is automatically make a link when posting. To make a link from a valid full URL, select it and then select the text then click the globe icon (top left above the post editing window) which will enclose the selection with a 'url' tag in square brackets. Job done. But, if you want to use some text in your post as the anchor text there's an extra step. First, select the text then click the globe icon (top left above the post editing window) which will enclose the selection with a 'url' tag in square brackets - I can't show that here as the tags will work as actual tags. In the example below I'll use {} for []. We select 'some text'. After clicking the globe you get:

{url}some text{/url}

To add the target URL for the link, edit the opeing {url} tag adding a '=' and the URL to the opening tag:

{url=http://www.eastgate.com}some text{/url}

Done. Insert an image in you post, it must be online. Copy the URL of the image and past onto a blank line in your post.  select the whole URL and click the picture icon (third from left above the edit box) and a pair of 'img' tags are added around the image URL. No further editing is needed. Tip: I find that to ensure some space above/below the image in the rendered post it is helpful to leave a blank line both above and below the image URL in the the source of your post.

Note this forum configuration does not allow the direct upload to files, images to be stored on the forum. If you don't have web space of your own, Dropbox allows you to give public read-only URLs to items in your Dropbox. I suspect the Apple iCloud allows the same (Not sure!).

I hope that helps.  

Edited:

Ah, sorry. That's likely an anti-spammer setting (I know we're under a constant barrage of spam users, for some reason).

However, you can always put full working URLs into your posts even if readers have to copy/paste to a browser.  

I've edited my post above as clearly I've 'mis-remembered'. This is the URL of the forum in text and with no mark-up applied: http://www.eastgate.com/Tinderbox/forum//YaBB.cgi

It's not turned into a link but anyone should be able to copy it and use it in a browser.

Fully clickable indeed!
Let me try to copy and paste:
no mark-up applied: http://www.eastgate.com/Tinderbox/forum//YaBB.cgi