As a first type design exercise and in order to properly learn how to use the software, I am redrawing the typeface
Akzidenz Grotesk by Berthold in Glyphs. I am basing my exercise on the
Akzidenz Grotesk Next version, a rendering of the font done by Bernd Möllenstädt and Dieter Hofrichter in 2006.
In order to study the original typeface, I opened the
.otf-file of my
Akzidenz Grotesk Next copy in Glyphs. Looking at the individual letters, I noticed the yellow-colored areas around the guidelines for the metrics (top, cap height, x-height, baseline and descender). In the new Glyphs-file which I created for my redrawing these are currently not being displayed. I am somehow unable to find out what these mean and what they are for. Could someone explain them to me?