To chain-select

Select the first segment.

ChainEdges options

AutoChain

Selecting a curve or surface edge automatically selects all curve segments connected with the level of continuity set by the ChainContinuity option.

When AutoChain=No, you can double-click a curve segment to perform chain selection.

ChainContinuity

Controls the level of continuity required between segments to be selected with the AutoChain option.

Direction

Forward

Selects curves in the positive curve direction.

Backward

Selects curves in the negative curve direction.

Both

Selects curves in both the positive and negative curve direction.

GapTolerance

If the gap between two edges/curves is less than this value, the chain selection will ignore the gap and will select the next segment.

AngleTolerance

When Continuity is set to Tangency, if the angle between two edges/curves is less than this value, the chain selection will consider the criteria for continuity met and will select the next segment.

Undo

Undo last segment selection.

Select next segment.

All

Select all segments.