REFRESH SYSTEM

Refreshes the system by by stopping all dynamic graphics activities and by removing unused, error-containing user environments. 

It is recommended that you use this item whenever ViSta becomes sluggish, or whenever the Listener window's prompt has a number in front of it.

HOW CAN VISTA BECOME SLUGISH?

ViSta may also become sluggish when there are too many dynamic graphics windows. Such windows, even when they have been minimized, use up your systems computing power. When many windows are contending for time to do their activity, and when there isn't sufficient computing power, the entire system slows down. 

WHAT ARE USER ENVIRONMENTS?

A user enviroment is the set of conditions and states that exist in ViSta as a result of a user's interaction with ViSta.

WHY MORE THAN 1 ENVIRONMENT?

Normally, ViSta just runs one user environment. In this case the Listener window's prompt has no number in front of it.

However, after an error has occured, ViSta automatically generates a new, error-free user environment in addition to the user environment containing the error. ViSta then  automatically places the user in the new error-free environment.

This provides all users with an automatic way arround the problem that caused the error, and provides the advanced user the option of investigating the cause of the error by returning to the errorful environment.

The number of additional user environments ViSta is running is indicated by a number in front of the Listener Window's prompt. Thus 2> indicates two user environments have been generated in addition to the one being used. 

While this provides an automatic way of dealing with errors, ViSta will stop running if it attempts to run an additional environment when there is insufficient memory. 

Thus, it is recommended that you use this item whenever the Listener window's prompt has a number in front of it.
