labelWidth = (int) PA.getValue(seqCanvas, "labelWidthEast");
assertTrue(labelWidth > 0);
int residuesWide2 = av.getRanges().getViewportWidth();
assertTrue(residuesWide2 > 0);
assertTrue(residuesWide2 < residuesWide); // available width reduced
x += 1; // just over left edge of scale right
labelWidth = (int) PA.getValue(seqCanvas, "labelWidthEast");
assertTrue(labelWidth > 0);
int residuesWide2 = av.getRanges().getViewportWidth();
assertTrue(residuesWide2 > 0);
assertTrue(residuesWide2 < residuesWide); // available width reduced
x += 1; // just over left edge of scale right