anchor.diff:  
   ==== System level dependencies - for Ubuntu 16.04 (Mint 18)
   ---------------------------------------------------------------------
  -$ apt-get update
  -$ apt-get install indent asciidoc dblatex libxml2-dev \
  +$ sudo apt-get update
  +$ sudo apt-get install indent asciidoc dblatex libxml2-dev \
   	cmake dia flex bison gcc g++ zlib1g-dev \
   	libssl-dev libcrypto++-dev \
   	libgpgme11-dev libxml2-dev libxml2-utils git
  
positive.code: 
  ==== System level dependencies - for Gentoo Linux
  ---------------------------------------------------------------------
  $ emerge sync
  $ emerge -av indent asciidoc dblatex libxml2 cmake dia \
  	flex bison zlib openssl app-crypt/gpgme dev-vcs/git
  ---------------------------------------------------------------------
  
  ==== System level dependencies - for Debian 8.2
  The same goes on Raspbian (Raspberry Pi OS)
  ---------------------------------------------------------------------
  $ apt-get update
  $ apt-get install indent asciidoc dblatex libxml2-dev \
  	cmake dia flex bison gcc g++ zlib1g-dev \
  	libssl-dev libcrypto++9 libcrypto++-dev \
  	libgpgme11-dev libxml2-dev git
  
negative.code: 	
  ==== System level dependencies - for Ubuntu 14.04
  ---------------------------------------------------------------------
  $ sudo apt-get update
  $ sudo apt-get install indent asciidoc dblatex libxml2-dev \
  	cmake dia flex bison gcc g++ zlib1g-dev \
  	libssl-dev libcrypto++9 libcrypto++-dev \
  	libgpgme11-dev libxml2-dev git
  