Graphics problems

• Some browsers, notably Internet Explorer, do not support SVG graphics natively. If you find you are seeing blank boxes instead of graphics output, you will need to download a plugin. There are several free ones available online. This website was tested using the Adobe SVG Viewer, available here.
  No plugin is necessary with most other modern browers, including Firefox, Opera and Google Chrome.
• We have observed a problem with Opera caching graphics even when the file has changed, so you see an old graph or outline image in place of the new one. To avoid this, go to the Menu tab, select Settings then Preferences, then on the Advanced tab pick History from the list on the left. At the bottom, you'll see "Check if cached page is updated on the server." Select "Always" for images.
  These instructions are for Opera 11 - older versions have Preferences in the Tools menu option.

• Main help screen.