From Geometry

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This command transforms the geometrical features (surfacic or linear) into polylines. This command is particularly useful if you want to use a geometrical shape in a command as a polyline.

Select the geometrical shape(s) you want to convert and launch the command.

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This command has 2 options:

Deviation: this value is the deviation between the geometrical feature and the discretized feature (mesh or polyline). In this option, points are not evenly spaced. The result is an object with the minimum number of points to satisfy the criteria.
Points evenly spaced. Average distance between points: the option will use a grid of points/vertices to discretize the feature.

If you want to use the default parameter, put 0 in one of the two fields. See below for details about default values.

When the option Points evenly spaced. Average distance between points is selected, the deviation is shown for information. However, when the option Deviation is selected, the distance between points has no meaning, so it is hidden (the points are not evenly spaced).
For some features (square slot, line, plane), the deviation has no meaning (straight or planar shape). In this case, the value is fixed to 0 and is not changeable.

Feature	Default number of points/vertices	Comment	Feature where deviation has no meaning: forced to 0
	2	One at each extremity
	359
	4	One at each angle
	4	One at each angle
	64	32 points on the base & top circle. No other points in between
	64	32 points on the base & top circle. No other points in between

As there is no edge on a sphere, the command is not enabled for a sphere.