MINHEIGHT attribute
The MINHEIGHT attribute defines the minimum height of a form.
Syntax
MINHEIGHT = grid-cells - grid-cells is an integer that defines the minimum height of the element, as a number of grid cells.
 
Usage
The MINHEIGHT attribute is used to define a minimum height for the
form/window. It must be specified in the attributes of the LAYOUT section.
The unit defaults to a number of grid cells. This is the equivalent of the
          CHARACTERS in the HEIGHT attribute specification.
For more details, see Widget position and size in grid
Example
LAYOUT ( MINWIDTH=60, MINHEIGHT=50 )
GRID
  ...