TAdvGlowButton 2.7.0.8: Purpose of TAdvGlowButton.MarginHorz?

VCL TMS VCL UI Pack
1

Setting the TAdvGlowButton.MarginHorz property to any value seems to have no visual effect. So what is the purpose of TAdvGlowButton.MarginHorz?

2

You can empirically find out when you set AdvGlowButton.Layout e.g. to blGlyphLeftAdjusted...