Because most computer users are example-driven types of people, let's start with a concrete command line example of what webseer can do from the command line. Don't worry about installation issues for now, you can try this yourself once you get the library set up in the next chapter.

extract -input http://www.google.com

This should produce something on your console like this:

***** FEATURES FOR: http://www.google.com *****
text.charCount=293
text.lineCount=9
text.tokenCount=45
text.spaceCount=36
...
            

The actual list of features might vary, but the idea should be the same. What webseer is doing is fetching the web page from the given url, running a bunch of analysis on the document, and spitting out everything it can figure out. This is the core of what webseer does, most everything else is built around specifying how webseer decides what URLs to look at, what features to extract, and then what to do with the output.