You can customize how your pages (and users) access attachments in your solutions and forums. For example, you can create a layout that will automatically show the thumbnail of the first image attachment alongside the solution’s overview. Any image attachments will automatically create a corresponding thumbnail as well.
What they mean
|attachment.url||url||URL to the attachment|
|attachment.thumbnail||url||Preview image of the attachment file|
|attachment.extension||string||The file extension of the attachment (.doc, .jpg etc)|
|attachment.filename||string||The filename of the attachment without the extension|
|attachment.size||number||File size of the attachment|
|attachment.is_image?||boolean||Returns true or false based on whether the attachment is an image or not|
PLUS Cloud files
Here's the list of placeholders for other categories such as, General Portal Information, Managing User Access, Forums, Access to Solutions, and Using Snippets for critical behaviour.