def RescaleAll
{
	lay -o %1 {lay -a}; // rescale selected layer to show all data
	yy1=layer%1.y.from; // lower limit in chosen layer
	yy2=layer%1.y.to; //upper limit in chosen layer
	// apply same limits to all layers
	loop (i,1,page.nlayers)
	{
		layer$(i).y.from=yy1;
		layer$(i).y.to=yy2;
	};
};

def RescaleAll
{
	lay -o %1 {lay -a}; // rescale selected layer to show all data
	yy1=layer%1.y.from; // lower limit in chosen layer
	yy2=layer%1.y.to; //upper limit in chosen layer
	yyinc=layer%1.y.inc; // scale increment of selected layer
	yymT=layer%1.y.minorTicks; // no of minor ticks
	// apply same limits to all layers
	loop (i,1,page.nlayers)
	{
		layer$(i).y.from=yy1;
		layer$(i).y.to=yy2;
		layer$(i).y.inc=yyinc;
		layer$(i).y.minorTicks=yymT;
	};
};