Reference for unit 'Buttons': Procedures and functions

`BidiAdjustButtonLayout`
`GetButtonCaption`
`GetButtonIcon`
`GetDefaultButtonIcon`
`GetLCLDefaultBtnGlyph`		`GetLCLDefaultBtnGlyph` - generic method to return the LCL default button glyph of the specified Kind
`LoadGlyphFromLazarusResource`		`LoadGlyphFromLazarusResource` - generic method to load a button glyph with specified name from a Lazarus Resource file (.lrs)
`LoadGlyphFromStock`
`Register`