Using the explicit solver, a user can control the behavior of elements based on the condition in some other element using control rules set based on the SWMM program. These control rules are based on the syntax rules presented below and in the Help (”Control Set Formats’) and are not used by the other solvers.

A user indicates that a control set is to be used in a give scenario by setting "Apply SWMM control set" to True in the Calculation options for that scenario, then picking the appropriate control set from the drop down list in "SWMM Control Set". The control set must already have been created.

It is best to only specify either a SWMM control set or on/off controls for a model but not both as the two types of controls can conflict.

This dialog box allows you to create, view, and manage SWMM controls. Access it by selecting Components > SWMM Extensions > Control Sets.

This dialog box contains a toolbar, a list pane on the left that displays all of the controls that have been defined in the current model, and a control editor pane on the right that allows you to enter and edit the currently highlighted SWMM control definition. The toolbar contains the following buttons:

	New	Creates a new entry in the Control List Pane.
	Delete	Deletes the entry that is currently highlighted in the Control List Pane.
	Rename	Lets you rename the entry that is currently highlighted in the Control List Pane.
	Report	Lets you generate a preformatted report that contains the input data associated with the entry that is currently highlighted in the Control List Pane.

The Control Editor Pane allows you to define SWMM controls.