| :: Reference :: Alignments ::Column alignments are: left, center, right, fill.And row alignments are: top, center, bottom, fill.
 The fill alignment expands a component to span
	its display area, so that the component's left-hand side
	is left-aligned, and the right-hand side is right-aligned.
	The same applies to top/bottom for rows.
	
	
	 Applying DefaultsFormLayout aims to minimize the effort to specificy alignments.
	Therefore it 1) tries to reuse alignments, 2) provide good defaults
	for form oriented layouts.1) The column and row alignments are applied to all components
	that are located in a single cell of that column/row.
	A component can override its column/row alignment by
	setting an individual alignment via a CellConstraints
	object.
	
	 2) By default, the column alignment is set to fill. 
	The implicit alignment for rows is center. 
	And so, if you don't specify column and row alignments, 
	your components will be horizontally filled and vertically centered. 
	This is a good default for most text fields, combo boxes, buttons 
	and it works fine with labels too.
	
	
	 Alignment ConstantsThe classes ColumnSpec, RowSpec provide
	constant values for the alignment values mentioned above.String RepresentationsI recommend to specify column and row alignments in 
	the FormLayout constructor using string representations.
	These strings will be accepted by the FormLayout,
	ColumnSpec, RowSpec and CellConstraints 
	classes and by many builder methods.
columnAlignment ::= LEFT | CENTER | RIGHT  | FILL | L | C | R | F
rowAlignment    ::= TOP  | CENTER | BOTTOM | FILL | T | C | B | F
 Examples
ColumnSpec.LEFT;
ColumnSpec.FILL;
new ColumnSpec("left");
new ColumnSpec("f");
RowSpec.BOTTOM;
RowSpec.CENTER;
new RowSpec("bottom");
new RowSpec("c");
new FormLayout("left:pref, 4dlu,    fill:pref", 
               " top:pref, 3dlu, center:pref");
               
new CellConstraints(2, 3, ColumnSpec.LEFT, RowSpec.TOP);
new CellConstraints(2, 3, "left, top");
new CellConstraints(2, 3, "l, t");
CellConstraints cc = new CellConstraints();
builder.add(component, cc.xy(2, 3, "left, top");
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