Show in split mode to see all three charts.
See also TableChartTest
outdata="""
Content-type: image/svg+xml TBWiki line chart 0 50.0 100.0 150.0 200.0 Q1 Q2 Q3 Q4
Content-type: image/svg+xml TBWiki bar chart 0 50.0 100.0 150.0 200.0 Q1 Q2 Q3 Q4
Content-type: image/svg+xml