Arc (Drawing Object)

[Valery Bartashevich <bvs97f@xxxxxxxxx>]

Hello All,


there is such an interesting thing in Tradestation 4.0
and Prosuite charting called 'Arc'. It is embedded 
drawing object.
I wonder if anybody knows the logic/Math behind this
tool.
TIA


best regards,
Valery Bartashevich
Minsk, Belarus