       referenceNames.push(i);
        
        return referenceNames;
    }
    
    /**
        Used by external font SWF files to register fonts. Should not be called by anything else.
        
        @param referenceName: The unique reference name of your font. Used to look up at a later time with {@link #getTextFormatByReferenceName}.
        @param field: TextField or {@link CoreTextField} with the embedded font.
        @param sender_mc: Reference to the external SWFs root/shell; if this code is on 