What type of data container is used in this example?

I’m sure this is a very novice question. I’ve been looking at a number of examples of things that can be done. In a few examples, such as

In_1.png

there is a concise block of data used. See In[1] in the above link. What is this? I would like to understand how to build on for a home project I’m working on about home values.

Multiple lat-lon pairs in a GeoPosition, show like a small icon with the different points:

GeoPosition[{{37, -109}, {37.2, -109}}]

If you click on the example-code it will copy it to your clipboard. If you select the CompressedData[…] and do Evaluate in place you will see the coordinates.

Wow. It really was that simple. Thanks. I could see what was in it, but was not sure how to make it. I can figure that out now.