Were maintaining incredible flexibility (there). Why did this happen? Please make sure your browser supports JavaScript and cookies and that you are not blocking them from loading. For more information you can review our Terms of Service and Cookie Policy. A Southwest Airlines Boeing 737-800 plane is seen at Los Angeles International Airport (LAX) in the Greater Los Angeles Area, California, U.S., April 10, 2017.
The mask is an adjustable interface.
( z0 interface :ARG1-of ( z1 adjust ) :domain ( z2 mask ) )
(z0 / interface
    :ARG1-of (z1 / adjust-01)
    :domain (z2 / mask))
The mask is an adjustable interface .
z0 :ARG1-of z1
z0 :domain z2