extended lines

["Tom Supera" <tom_supera@xxxx>]

Hi Tomasz,Every day i use extended lines.On 
the most lines i must click "Right extend".
 
Is it possible to make a shortcut or switch in the 
toolbar, to draw extended lines in one step . (i always use right 
extend)
 
I hope you can realize this. It's very important 
for me.
 
Thanks
 
Tom Supera