HBOX container
Packs child layout elements horizontally.
Syntax
HBOX [identifier]  [ ( attribute [,...] ) ]
  layout-container
  [...] 
END
- identifier defines the name of the element, it is optional but recommended.
 - attribute is an attribute for the element.
 - layout-container is another child container.
 
Form attributes
COMMENT, FONTPITCH, HIDDEN, NOSWIPE, STYLE, SPLIT , SPLITTER, TAG.
Style attributes
Common: backgroundColor, border, fontFamily, fontSize, fontStyle, fontWeight, textColor, textDecoration. 
Class-specific: none.
Can hold
Usage
An HBOX container packs other form items together, in the horizontal
direction.
For more details about this item type, see HBOX item type.
Example
HBOX
  GROUP ( TEXT = "Customer" )
   ...
  END
  TABLE
   ...
  END
END