Template Dev - Using All and Menu Together

The {all} block can be used to generate arrays of info from several classes. Folders, pages and images are the main objects of interest for the {all} block.

You can use {all} to generate a list of all folders:
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{all class="folder"}
{$folder.title}
{/all}
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Or you can combine it with menu to add more sophisticated formatting options:

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{all class="folder"}
{menu name="folder_menu" link=$folder.url text=$folder.title}
{/all}
{menu name="folder_menu" sep=" | "}
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This will display all your folders in a horizontal fashion with a " | " between (ala Yahoo GUI)