File toolbar
To open a toolbar...
New
Create a new model based on a template.
Insert
Insert block objects stored in the file or import a file as a block definition.
ExportWithOrigin
Save objects to a new file with a specified origin and construction plane.
Worksession, Attach
Adds a model to the worksession list.
Link to Worksession toolbar.
Worksession
Manage a list of models that can be used as reference geometry.
SaveAs
Save the current model with a different name, close the current model, and open the new model.
SaveAsTemplate
Save the current model as a template file.
Saves the current Rhino model, including unsaved data, to a new 3dm file. The current date and time will be added to the file name. 
SaveACopy
IncrementalSave
Save sequentially-numbered versions of a model.
Autosave
Save the current model to a backup file.
SaveSmall
Save geometry objects without render or analysis meshes.
Save geometry only
Saves geometry objects only. No layers, materials, properties, notes, or units settings are saved.
Revert
Discard changes and revert to the previously saved document.
ExportBitmaps
Create files from bitmaps in the model.
Print the current viewport or layouts.
Notes
Open a text notes window.
SetWorkingFolder
Specify the default folder for saving and opening files.
DocumentProperties
Manage the settings for the current model.