DURMA (DT15) CONTROL UNIT

DURMA DT-15 CONTROL UNIT
19" Color touch screen
Manual profiling on the touch screen
Services over the internet
Easy programming mode
Automatic bending order
Tools programming and library

[@Yar6500]

I'm curious, when the lines are drawn in manual profiling mode are they measured by middle line or total extent of the profile? If I have let's say two 90 deg bends to get outer dimensions of 40*40 should I enter 40 mil lines in the touch screen and then just set thickness, die and punch and go on with it?