Bob:

We have expanded an RS html to include EZ 
[http://ursula.chem.yale.edu/~chem220/chem220js/STUDYAIDS/isomers/RSEZ/RSEZexercises.html
 
<http://ursula.chem.yale.edu/~chem220/chem220js/STUDYAIDS/isomers/RSEZ/RSEZexercises.html>].

There are several questions.

1) Can the RS tags be separated from the EZ tags? Just to simplify the display.

2) Is there a reason both sp2 carbons in double bonds are tagged? Is one E/Z 
tag over the double bond possible?

3) Example (2Z,5E)-4-methyl-2,5-heptadiene displays EZ but not the 
R-configuration. Exploring this example on the Jmol console, the 
R-configuration appears.
    All other examples at the link work fine.


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