Sketch Libraries
What are Libraries?
Libraries are Sketch documents that can be used globally.
sketch-library-sample
How do they work?
Open your Sketch preferences and go to the “Libraries” tab.
Click “Add Library…” and choose a Sketch file.
Done! You can now use every symbol from that Sketch file in any document.
Any time you save changes to a symbol in the master library file, you’ll be notified of the change(s) and prompted to sync any document that uses symbols from that library: