Bleank

We need the masking tape.

ademilo : what do you mean by masking tape ?
Do you want a Mask for each layer ? or somehting else ?

You can check masking tape on this address.
https://images.search.yahoo.com/search/images;_ylt=AwrSbmn.eztTDGsA0EhXNyoA;_ylu=X3oDMTB0c25lYTQwBHNlYwNzYwRjb2xvA2dxMQR2dGlkA1ZJUDM4NF8x?_adv_prop=image&fr=yfp-t-901&va=masking+tape

What is masking tape?

We use masiking tape for drawing plane.

We artist use a masking tape on canvas,we can draw plane for using masking tape.
Because it mask canvas straight,we can draw strait colors on canvas.

Go online for masking tape.

http://en.wikipedia.org/wiki/Masking_tape

ademilo : you will be able to do that with the Selection tool. this feature will be added in the next release.

OK!