closing pdf file
 

This may seem simple but I do not know how to close a pdf file after viewing it in UR. I can do it by going to the topic window and choosing another topic but that does not seem correct. There must be some way of doing it but I don't see it. There is no 'file close' command to use.

You don't 'close' an item per se in UR. The ways to stop looking at a particular item are:

1) File | Close on the menu to close the entire database
2) Navigate to a different item in the database
3) Navigate to an external URL (via the web address toolbar)
4) Close you eyes :^)