Which of the following comments about Wait Stages are correct?
1. After a Navigate stage which moves an application from one screen to another, it is good practice to configure a Wait Stage to detect the screen change has successfully completed.
2. It is good practice to hold the timeout values to be used in Wait Stages as a set of global data items on a Business Object' initialise page
3. It is good practice to ensure that a Wait Stage times out to another stage - normally an Exception Stage
4. There is no need to configure a Wait Stage, at the start of a Business Object action, to validate the application is on the correct, screen if the previous action called by the Process has validated a successful screen change.