I have also emailed this to support@softwarefx.com. That email contained pictures There is no way to attach pictures to messages so will link to attachments on my support call.
in chartfx 6.0 using continuous = true;
http://mysupport.softwarefx.com/help/supporttool/DownloadFile.aspx?FID=6804588e-aacd-4ddf-becf-61f804e9832f
in chartfx 7 notice above the legend items are longer and 'continuous'. below they are not.
http://mysupport.softwarefx.com/help/supporttool/DownloadFile.aspx?FID=5418a931-6d34-42c6-b907-3a41421aff4e