Panel inside OpenGL context. Use as a comfortable (and with matching colors) background for other controls like buttons and such. May be used as a toolbar, together with appropriately placed TCastleButton over it.
Separator lines drawn on panel. Useful if you want to visually separate groups of contols (like a groups of buttons when you use this panel as a toolbar).
Values are the horizontal positions of the separators (with respect to this panel Left). Width of the separator is in SeparatorSize.