Check table or explanatory texts are merely output fields. They usually appear at the end of an input field, and provide a fuller description of the entry; for example, what a numeric or alphanumeric key stands for.
Figure 1: Scrollable check table text can be recognized in the Windows GUI by the gray line at the end of the visible field.
Area of Use
In principle, check table texts should only be available after input fields concerning the entry of an abbreviation or a key. Check table texts make the picture easier to understand.
Rules for Use
In the following cases check table texts should not be scrollable, but should be shown in full:
The Screen Painter (see the adjacent figure) provides the scrollable attribute, which can be set for each input and output field. If this attribute is set and the visible length is shorter then the defined length , the field will be scrollable at runtime. Since check table texts are dynamic texts, that is, they are not entered in an output field until runtime, the attribute Output only must be set in the Screen Painter for these fields, so that the output is in proportional font.
Source: SAP R/3 Style Guide