\begin{rubric}{The Rubric's Title}
  \entry*[Key 1]
  This is an entry with a key. The key is displayed on the left, and you're
  reading the entry's contents. As you can see, this entry does not belong to
  a subrubric.
  
  \subrubric{A First Subrubric}
  
  \entry*[Key 2]
  This entry belongs to the first subrubric. Before the subrubric,
  some space is added to separate it from the previous entry.
  
  \entry*
  After the subrubric, some space is also added to separate it from the
  first entry. Note that this entry has no key. The entries contents are
  aligned together.
  % \text{%\par\itshape
  %   This is a piece of text produced by the \texttt{\char`\\text} macro. It
  %   spawns the whole text width. If you want to further separate it from the
  %   normal entries with vertical space (like here), you can use the
  %   \texttt{\char`\\par} command.\par}
  \entry*[Key 3]
  This is another entry with a new key.
  \entry*
  This is another entry, but this one has no key. Note the text bullet
  which serves as a visual clue, especially when several entries share the
  same key.
  \subrubric{A Second Subrubric}
  \entry*[Key 1]
  This entry belongs to the second subrubric.
  \entry*
  This one also belongs to the second subrubric.
  \entry*[Key 2]
  This is another entry with a new key.
  \entry*
  This is another entry, but this one has no key.
  \subrubric{}
  \entry*[Key 3]
  If you want to separate some entries from the subrubric above,
  you can for instance make an empty subrubric.
  \entry*
  You can include other rubrics below. Rubrics can even be split across
  pages. The titles will then be repeated.
\end{rubric}
