When a document is being used, the user usually wants to make a number of selections before evaluating the results. For example, he/she may choose a period, then a client, and finally a product.
This is all well and good, but each time they make one of these selections, the whole screen is recalculated. If you have a document with many rows of data and complex expressions (especially those with Set Analysis overriding selection criteria), it can take a while, meaning that the user is left waiting before they make the next selection.
Create a variable and set it to zero.
Make your major object only visible on the content of a variable that is set to zero.
Create a button that toggles this variable between one and zero.
Make a selection panel that is also only visible on the content...