Removing a 'throws' clause which isn't relevant, in Blocks.
More improvements to Javadoc in BlockGenerator.
Improving some Javadoc in BlockGenerator.
Some Javadoc embellishments in BlockGenerator.
Cleaning up Blocks.main().
Fixing an <img> tag in Blocks.
One more little change to Blocks.
Streamlining Blocks a little bit.
In Blocks, better handling of compact().
