Panel:DockMargin
Description
Sets the dock margin of the panel.
The dock margin is the extra space that will be left around the edge when this element is docked inside its parent element.
Arguments
Example
Example showing the effects of DockMargin and DockPadding
local frame = vgui.Create("DFrame")
frame:SetSize(600, 300)
frame:SetTitle("Docking Demonstration")
frame:Center()
frame:MakePopup(true)
local panel = vgui.Create("DPanel", frame)
panel:DockMargin(10, 20, 30, 40)
panel:DockPadding(40, 30, 20, 10)
panel:Dock(FILL)
local button = vgui.Create("DButton", panel)
button:SetText("Lopsided proportions!")
button:Dock(FILL)
Output: 
