code: function( db, prefix ) {
  		if (!prefix) prefix="";
  		// Import into an easy-to-process format
  		var keys = Object.keys(db), k, v;
  		for (var i=0; i<keys.length; ++i) {
  			k = keys[i]; v = db[k];
  			if (!db.hasOwnProperty(k)) continue;
  
  			this.dbTags.push( prefix+k );
  			this.dbObjects.push( db[k] );
  
  			// Define the XRef property for faster lookup of the key
  			Object.defineProperty(
  				v, "__xref__", {
  					enumerable: false,
  					value: k,
  				}
  			);
  
  		}
  		// Keep reference of database
  		this.database = db;
  	}
docs: Define an external database of tagged objects to use
  for cross-referencing external entities.