filled region - region with no lines

[kubbah]

it is possible to make a deduction region (the one between the annotations - filled region)
without his contour?
is to set that its contarno is transparent invisible or nonexistent?
Thank you.

 

[frcprogetti]

Of course you can, when drawing the contour choose between the lines those invisible:finger:

 

[kubbah]

fantastic thanks :d