(Graphical interfaces only)
The height, in character units, of a vertical grid unit on the frame.
Data type: DECIMAL
Access: Readable/Writeable
Applies to: FRAME widget
This attribute specifies the distance between vertical grid points in the frame. When a widget is moved or resized, it snaps to these grid points within the frame when the GRID-SNAP attribute is set to TRUE. The default value depends on the display resolution and the size of the default system font.