* 0-based index of the font
* @return of an instance of <code>PPFont</code> or <code>null</code> if not
* found
*/
public PPFont getFont(int idx) {
FontCollection fonts = getDocumentRecord().getEnvironment().getFontCollection();
for (Record ch : fonts.getChildRecords()) {
if (ch instanceof FontEntityAtom) {
FontEntityAtom atom = (FontEntityAtom) ch;
if (atom.getFontIndex() == idx) {
return new PPFont(atom);
}