Click Save (

) to save the currently open model on the connected COMSOL Multiphysics server. The model is saved in the MPH-file format. Then the link between the spreadsheet and the model is updated automatically.
Click Save As (

) to save the currently open model file using a new name. The model is saved in the MPH-file format and the link between the spreadsheet and the model is updated automatically.
Click Save To (

) to save the currently open model file to a Model Manager database. For more details, see
Saving Models to Databases in the
Model Manager Reference Manual.
Click Save Draft (

) to save a draft of the currently open model. This option is only available if the model is opened from, or last saved to, a Model Manager database.For more details, see
Saving Drafts of Models in the
Model Manager Reference Manual.