Controls included in a screen often have associated events related to the different actions that end-users can perform in runtime on the control. An example might be the Click event in a web environment.
Depending on the control (and its type and mode: ReadOnly or not) and on the object (Web Panel, Panel) the events offered.
A subset of these events consists of those that are directly related to a mouse action (click, double click, right button: in a web environment) or finger (tap, long tap, double tap, etc.: in a devices: known as touch events).
Examples of control events (other than previous) are those that recognize when a non read-only variable or attribute has changed its value (ControlValueChanged event in Panels, IsValid event in Web Panels), or a page of a paged grid has changed (PageChanged event), etc.