There are two ways to set the bias of an individual field or menu item from 4GL. The simplest way is to use the CurBias attribute to set the current bias. The alternative way is to set the bias for a particular mode with the ReadBias, QueryBias, UpdateBias, User1Bias, User2Bias, or User3Bias attributes. Use the mode-bias settings only when you are working with frame modes.

The following section describes the CurBias attribute. For a discussion of using the mode-bias attributes, see How You Can Use the Mode-Bias Attributes (see How You Can Use the Mode-Bias Attributes).