Tracing to Stream mode

[MeganBurns]

Is there a way to switch from using tracing along the feature to stream mode in a single shapefile? I am trying to create a reference layer for a large area of contours, and would like to snap to the endpoints as well as follow the line feature.

Thanks

[LeonardLuz3]

I'm not sure if there is but what you can do is switch from trace to straight segment first then hit F8 for the stream. Click to end the stream then move back to trace again.