I am writing a document class for LaTeX and I want it to be generic. In this document class I redefine the \maketitle command to display a custom title page, and here I want to display some information, like the title, author, etc., but also some other informations. Here is how I display the title:

{\LARGE{\bf \@title}}\\

I'd like to create a new command that works similarly to \title or \author, how can I do that?