The abscissa is more difficult. Use the VIEW menu of your browser and select source. You have to change the PARAM line in the source code on the web page. Save your changes. Note that the Applet call is used twice. It is:
PARAM name ="abscis" value = "_ 0 1 2 3 4 5 Years since posting"
You have to experiment with the PARAM line to get the label to look right. Most users will find out that it is easier to write on a scrap of paper and hold it up to the computer screen while using this web page.