If you'd like to export your notebook for archival purposes or to use with Zeppelin, you can easily do so in Zepl.
Navigate to the "..." menu in the top right corner of the notebook
Click "Export as Zeppelin" and select a notebook format standard to download the notebook
Open the Notebook file in Zeppelin or share with others
If you would like to share your notebook in PDF form, you can easily export the notebook inside of Zepl.
Navigate to the "..." menu in the top right corner of the notebook
Click "Export as PDF" to download the notebook
Open the PDF file to share with others