What command make a pair lines equidistant from a curve?

Rhino Rhino for Windows
1

Hi,
V5,v8

what command makes a pair of lines equidistant from a selected curve ?

Cheers

Steve

2

An example or sketch would be helpful in understanding your request.

How are the lines to be oriented? If the selected curve is curved then how is “equidistant” defined?

3

Offset the curve with the “both sides” option?

4

image
image1648×783 224 KB