Install imagemagick-6-doc by entering the following commands in the terminal:
sudo apt update sudo apt install imagemagick-6-doc
Description:
document files of ImageMagick
This package contains the document files shipped with ImageMagick, a software suite to create, edit, and compose bitmap images. . Documentations includes html manuals, examples files, and doxygen generated API documentation.
Homepage: http://www.imagemagick.org/
Version: 8:6.9.7.4+dfsg-16ubuntu6
Section: universe/doc