Editing Eiffel (programming language) (section)

===Style conventions===
Much of the documentation of Eiffel uses distinctive style conventions, designed to enforce a consistent look-and-feel. Some of these conventions apply to the code format itself, and others to the standard typographic rendering of Eiffel code in formats and publications where these conventions are possible.

While the language is case-insensitive, the style standards prescribe the use of all-capitals for class names (<code>LIST</code>), all-lower-case for feature names (<code>make</code>), and initial capitals for constants (<code>Avogadro</code>). The recommended style also suggests underscore to separate components of a multi-word identifier, as in <code>average_temperature</code>.

The specification of Eiffel includes guidelines for displaying software texts in typeset formats: keywords in bold, user-defined identifiers and constants are shown in ''<code>italics</code>'', comments, operators, and punctuation marks in <code>Roman</code>, with program text in <code>blue</code> as in the present article to distinguish it from explanatory text. For example, the "Hello, world!" program given above would be rendered as below in Eiffel documentation:

<syntaxhighlight lang="eiffel">
class
    HELLO_WORLD
create
    make
feature
    make
       do
          print ("Hello, world!")
       end
end
</syntaxhighlight>