4. Is it possible to organize the screen and to customize tabs or modules according to user preferences?

Is it possible to organize the screen and to customize tabs or modules according to user preferences?
This question (reproduced on our wiki here) was asked by the writer of the blog at http://electronic-medical-record.blogspot.com/2007/06/considering-emr-or-ehr-software-system.html

which, of course, is not endorsed by this wiki or even known to the people who run it.