The attribute "font-style" is used to specify whether the text is to be "normal" or "italic". If omitted, the text may be rendered in either way. In the SBML Level 3 Version 1 Render specification, the following are the allowable values for "font-style":
"italic", slanted print
"normal", upright print
Visit SBML.org for more information
about SBML and libSBML.