Mistakes happen, however careful you try to be. Because of this we provide the replacement files for the web pages to correct the mistakes.

One saves the source of the document by using the popup menu that Netscape Navigator or Internet Explorer provide for the links. To activate this popup use of the right mouse button in Windows while for the Mac OS one click and hold the mouse button on the link, then:

It is prudent to first make a backup copy the files that are to be replaced.

Nuclear Magnetic Resonance

File www/NMR/examples/etcin/fc_b.gif showed the wrong atom highlighted in blue.

Chimed Organic Structures

File www/chorgstr/chinstr.htm had wrong instructions for the IBM translation and rotation around the view direction