protovis part 2: lines and labels
Creating a Comment
Lets start by creating a comment. Comments are notes that you make in your code that don't affect the programming. You can identify what the code is or does so that you can keep it organized. Put your cursor after the semicolon in the bar code. Hit return a couple of times then type 2 forward slashes and the words baseline rule. Hit return again and type example.add (pv Rule).