EditMask is a box in which the user can enter and edit more than one line of text as long as it passes the edit mask specified for the control.
Every EditMask control has:
A style, which is determined by its attributes
Events, which can trigger the execution of scripts
Functions, which are part of the definition of the EditMask and are used in scripts to change the style or behavior of the EditMask, or to obtain information about the EditMask