The rubric , from Latin terminology rubrum , was born in the antique documents of the Middle Age, to which the Latin words scripsit firmavit recognovit, which mean written, signed recognized, were added in order to legalize words started to deform and turned illegible, persisting in the form of lines or scrawled drawings that appear next to signatures. Rubric is a l ine or set of lines added to the name to sign that individualize the signature of each person. In the signature analysis, rubrics reveal personal ambitions. There is no valid calligraphy for rubrics. We try to avoid that our signature is adulterated easily and that is why we usually look for rubrics that not only appear next to and decorates the signature, but also that are not easy to counterfeit. There are people who do not “rubric” and who tangle the signature with the rubric. There are rubrics that persist along the years, that are constant and others that change with time, that fade out. Each one has a different interpretation.