[xwiki-users] Chart legends

Which parameters can be used to 'format' the axis of a chart? I would like to understand how Text can be used as labels for a Bar and/or Line chart Currently if the text is to long it will only show few characters. In other charting programs it is often possible to rotate the text labels so they are almost vertical, you can put long label names I would also like to know if possible to add a Axis Title. Our example of current is: http://www.cdlsworld.org/xwiki/bin/view/CdLSTopics/SIBCdLS It holds a chart labeled "Health problems in…", as you can see nobody can read the X-Axis labels? Or understand what Y-Axis means ("Percentage")? the documentation on: http://extensions.xwiki.org/xwiki/bin/view/Extension/Chart+Macro does not specify which options you can add to parameter: params. We use XWiki 3.5.1