+ case LFUN_CITATION_OPEN: {
+ string pdfv, psv;
+ if (theFormats().getFormat("pdf"))
+ pdfv = theFormats().getFormat("pdf")->viewer();
+ if (theFormats().getFormat("ps"))
+ psv = theFormats().getFormat("ps")->viewer();
+ frontend::showTarget(argument, pdfv, psv);
+ break;
+ }
+