void testGraphs()
{
	// find maximized graphs
	vector<string> vsGraphs;
	foreach(GraphPage gp in Project.GraphPages)
	{
		if( PAGE_MAXIMIZED == gp.GetShow() )
			vsGraphs.Add( gp.GetName() );
	}
	
	GraphPage gpNew;
	gpNew.Create("Origin");
	GraphLayer glNew = gpNew.Layers();
	
	// add plots from selected graph to one new graph in one layer
	for(int nn = 0; nn < vsGraphs.GetSize(); nn++)
	{
		Page pg(vsGraphs[nn]);
		foreach(Layer lay in pg.Layers)
		{
			GraphLayer gl(lay);
			Tree tr;
			bool bWasGroup = gl.UngroupPlots();
			gl.GetLayerContents(tr, GETLC_DATAPLOTS | GETLC_NO_LIMITS);
			
			int nPlots = glNew.AddPlots(tr.FirstNode, ADDPLOTSFROMTREE_NEW | ADDPLOTSFROMTREE_IMPLICIT_STYLEHOLDERS); // returns total number of data plots in the layer 
		}
	}	
}