Click on the .R file (e.g., beams.R) to open it, then save to a file 
in your working directory, and use source() to input the file to the 
R workspace.

[You can of course save the file to anywhere convenient, but then
you will need to include the filename path along with the filename
when you source the file.]

Alternatively, right click on the file (e.g., beams.R or beams.RData), 
and use the "Download Linked File As ..." menu item to save to a file 
in your workshpace.  Use, e.g., source("beams.R") or load("beams.RData") 
to place the dataset in your workspace.

John Maindonald
Dec 3, 2010.