After learning that there’s a waaaay easier way to add an image to Dynamo than how I’ve been doing it, I was staring at the properties and …
Apologies if I asked this before but I have the memory of a 
I want to link our company’s help document - but it’s a pdf on our server, not a URL. Is there a way to do that?
What does the Custom Property bit do? How do I use it?
Also, it’s Friday. Whooo 
@Alien sounds like we need to better message the Graph Properties out 
The Learn More URL is a string right now, so not even a clickable link… we have work to do here. But, it could be a link to a PDF on your intranet? Worth a test.
The Custom Properties are just that - properties you can customize! In the examples below you’ll see what is done in Dynamo vs. how it shows up in the DYN file:
The Description is near the top of the DYN file (A JSON file formatted file type):
The Image comes under the Thumbnail key and is a Base64 encoded image… it will be very long. Small snippet below. Note that having an image will significantly increase the size of your DYN file… but we’re talking like ~50kbs to 1MB so not that huge in the grand scheme of things 
Directly underneath the Thumbnail key is the GraphDocumentaionURL key where your URL lives, and below that is the Graph Properties extension, within which is a Data key where all your Custom Properties live as key:value dictionary pairs:
