This looks cool and I love IoT so I wish I could figure out what it does! The screenshot looks like it might give me a hint except it's too small to read and I

This looks cool and I love IoT so I wish I could figure out what it does! The screenshot looks like it might give me a hint except it's too small to read and I can't figure out how to enlarge it if that's possible. >It [...] makes it easy to wire together flows using the wide range nodes in the palette. Right, well does that mean? Is this a visual programming language? An IFTT or YQL-like service? I know that I can read the getting started guide but that tells me how to install the software and how to create my first flow from a quick look at it, and I am not going to spend more time now, except for ranting here :-)