Hi Brian, great notes there - just one clarification on this part:

> rho is rounded off, in MoI, to two decimals.

It's really just the display in the edit field that is rounded to 2 decimals - you can type in a number into that field with as many decimal places as you want and whatever you type will get set as the actual rho value for constructing the conic.

You can also adjust how many decimal places are displayed in edit fields by the setting under Options > General > "Decimal display" , but again that only controls what is displayed, if you type in more decimals than that it will use what you type in any edit field.

- Michael