Useful keyboard shorcuts Super+Alt+8 is missing

Ubuntu Desktop Guide
in the page 'Useful keyboard shorcuts' the shortcut Super+Alt+8 to activate zoom is missing.
in the page 'Magnify a screen area' should be noted that the shortcut Super+Alt+8 is the only way to exit from zoom because 'Crosshair' is NOT activated by default so after activating zoom you remain whithout mouse pointer and clicking the accessibility icon on the top bar is almost impossible.

In Settings > Universal Access > Zoom Options the Crosshair option should be activated by default for the above reasons

ProblemType: Bug
DistroRelease: Ubuntu 19.04
Package: ubuntu-docs 19.04.1
ProcVersionSignature: Ubuntu 5.0.0-7.8-generic 5.0.0
Uname: Linux 5.0.0-7-generic x86_64
ApportVersion: 2.20.10-0ubuntu23
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Sat Mar 23 13:29:54 2019
InstallationDate: Installed on 2019-03-23 (0 days ago)
InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Alpha amd64 (20190318)
PackageArchitecture: all
SourcePackage: ubuntu-docs
UpgradeStatus: No upgrade log present (probably fresh install)