{starred-version} is about command variants that are followed by a *.
Command-variants followed by a *, like \section*. These variants act as an alternative to the original command, with conditioning through \if@star or other means. For example, xparse defines a starred variant by means of an "optional argument":
\usepackage{xparse}% http://ctan.org/pkg/xparse
\NewDocumentCommand{\engl}{s o m}{%
% #1 = *
% #2 = optional
% #3 = mandatory
}