In programming Characters per line

^ ada 95 quality , style guide
^ style guide python code
^ gcc coding conventions
^ linux kernel coding style
^ google c++ style guide
^ google s r style guide
^ google python style guide
^ psr-2: coding style guide
^ mozilla coding style
^ 4.1. line length . java code conventions (pdf). sun microsystems, inc. 1997. p. 5. 
^ pep 8 style guide python code (actually 79 , 99 characters)
^ openlisp style guide
^ ccm4 self-imposed limit
^ android code style guidelines contributors
^ google java style
^ fortran 90
^ blink coding style guidelines
^ moodle coding style
^ mono coding guidelines
^ effective go