I am newbi here,

I am using diagram.MeasureUnit = Display

and drawing nodes in the code, in design mode there is no vertical scroll bar, but when i run it shows one even if my digram fits to the screen

one more problem is,
I am using tabs on one tab i am using Loadgraphics() which create the linked nodes but when i click on onother tab and switch back to the LoadGraphics() tab it draws copy of some of the nodes
even when I click on node and try to drag it, the douplicate single node is created without links, why this is happning?

thanks in advance