Controls how long the pop-up hint is displayed before being erased. See section 3.8.4 in Book 2, "User Interface Programming" for a description of pop-up hints. Set this variable to the number of hundredths of seconds to display the hint. The default value is "400" (four seconds). If you set this value to "0", the hint will remain displayed until some other event (such as using the button or typing) causes it to disappear.