How do I make a document open directly when clicking on an object in the publication?

If you want a document to open directly when you click on an item in the published material, you need to make a setting in the web profile.

Click "Tools" - "Publish". Then select the web profile you use to publish your models. Click the edit pen on the right to edit the web profile.

Click the edit pen on the model surface.

Select the layout you want to set the settings for, then turn on "Follow link on click on item" and select "Open document".

Document links will now be opened directly when clicking on the objects included in the layout you chose to make the setting for. In this FAQ you can read more about custom layouts: How do I create a custom layout in the web profile?