[GRASSLIST:7675] v,digit ---how to use the stream mode ?

Hi all;

In the Digitizing (v.digit) menu of GRASS 5.3 there is an option to toggle the"mode" between point and stream, but the key to toggle between these modes is not shown. Is it because I'm digitizing with the mouse, that I can't use the stream mode? (I guess that stream means that it is possible to draw a free continous line. Isn't it?)
kindly reply to me if anyone can help me on this.
and tell me how can i use the stream mode.

Thanking you

Nagesh V Bhatkar
Physical Oceanography Division
National Insitute of Oceanography
India- Goa

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