Open or import option not available in collobora user interface

Hi,
In file menu , we did not see the open/Import option . How can we import file from disk in collabora user interface.
Thanks
siva

Collabora Online is an editor that conforms the WOPI protocol, it has to be invoked with giving the location of the WOPI endpoint the file can be retrieved from.

For details see: https://sdk.collaboraonline.com/