docs: function( url, callback ) {
  
  		// Node quick, not present on browser builds
  		if (IS_NODE) {
  
  			// Helper function
  			var readChunk = function ( filename ) {
  				// Read into buffer
  				var file = fs.readFileSync(filename),
  					u8 = new Uint8Array(file);
  				// Return buffer
  				return u8.buffer;
  			}
  
  			// Read by chunks
  			if (url.substr(-5) === ".jbbp") {
  
  				// Add by buffer
  				var base = url.substr(0,url.length-5);
  				this.addByBuffer( [
  					readChunk(base + '.jbbp'),
  					readChunk(base + '_b16.jbbp'),
  					readChunk(base + '_b32.jbbp'),
  					readChunk(base + '_b64.jbbp'),
  				], callback );
  
  			} else {
  
  				// Add by buffer
  				this.addByBuffer( readChunk(url), callback );
  
  			}
  
  			// Don't continue on browser builds
  			return;
  
  		}
  
  		// Check for base dir
  		var prefix = "";
  		if (this.baseDir)
  			prefix = this.baseDir + "/";
  
  		// Check for sparse bundle
  		var parts = url.split("?"), suffix = "", reqURL = [];
  		if (parts.length > 1) suffix = "?"+parts[1];
  		if (parts[0].substr(parts[0].length - 5).toLowerCase() === ".jbbp") {
  			var base = prefix + parts[0].substr(0, parts[0].length - 5);
  			reqURL = [
  				base + '.jbbp' + suffix,
  				base + '_b16.jbbp' + suffix,
  				base + '_b32.jbbp' + suffix,
  				base + '_b64.jbbp' + suffix
  			];
  		} else {
  			// Assume .jbb if missing (TODO: not a good idea)
  			var url = parts[0];
  			if (url.substr(url.length-4) != ".jbb") url += ".jbb";
  			reqURL = [ prefix + url + suffix ];
  		}
  
  		// Load bundle header and keep a callback
  		// for the remainging loading operations
  		var pendingBundle = {
  			'callback': callback,
  			'status': PBUND_REQUESTED,
  			'buffer': undefined,
  			'url': reqURL
  		};
  
  		// Keep this pending action
  		this.queuedRequests.push( pendingBundle );
  
  	}