Contextual help class
Instantiations of this class are "passive" objects.
AS_NO_ALIGN - no align is made
AS_LEFT - aligns to the left
AS_CENTER - centers the text horizontally
AS_RIGHT - aligns to the right
AS_TOP - aligns to the top
AS_BOTTOM - aligns to the bottom
AS_MIDDLE - centers the text vertically
__Flags - options, which can be:
DISPLAY_MARGINS - show window margins