First, find the PDF you wish to upload. Then, either copy the PDF’s link or download the PDF onto your device.
In your Knowledge Base, choose or create a Rem you wish to attach the PDF as a source.
Zoom into that Rem and click ‘Add Source’ or type /Sources or /isrc. Then either paste the link or browse your computer to find the PDF.
Once you select one or hit enter, it will be uploaded and open immediately in a new panel.
If you do not like the default name, select the doc symbol in the upper left, this will open the backside of the PDF where you can find all the highlights. You can edit its name here.
Now you can get started annotating it!