It can me useful to download the source code to your form template to share with a third party. In this case you can download a copy of the template by following the instructions below:
Open the form builder screen to the form you wish to export
In the top right hand corner click the "..." to open the context menu
Click "View Source", this will open a dialogue showing the source code
Click the download icon located in the bottom left of the popup. This will download a .json file which you can now share with others