MRML:The Medical Reality Markup Language (MRML) scene file is an XML-based text file that references all data loaded into Slicer, and records its display and processing parameterization. Loading a MRML scene file will also load its referenced data and display it in the manner it was saved.

	File->Load Scene: This load command selected from Slicer's File Menu will close the current scene, pop up a File Browser, and load data from the MRML scene file you select. File->Import Scene: This load command selected from Slicer's File Menu will pop up a File Browser, and add all data referenced in the MRML scene file you select into the current scene. File->Add Volume: This command allows the loading of individual volumes or use of Slicer's DICOM browser. File->Download Sample Data: This command provides an option to download a variety of anonymized datasets for learning and testing in Slicer. Because the datasets are hosted in a remote repository, a network connection is required to access them. File->Add Data: This command raises a load panel with a set of options for loading individual datasets or entire directories containing data. File->Add Transform: This command provides an option to load a transformation matrix.
	Load or Import Scenes or Data: Clicking the Load icon (shown at the left) from Slicer's Toolbar exposes the options to Load or Import a MRML scene, or to raise the "Load Data" panel to select individual datasets or entire data directories.
	Load Any: Find a convenient collection of options to load scenes and all supported data types in the Data Module's, "Load & Add Scenes or Individual Datasets" Panel. The Data Module can be accessed using its icon (shown at the left) in Slicer's toolbar, or by using the Modules Menu. Once data has been added to the scene, it will be displayed in the Data Module's MRML scene tree.

File->Save: This option will raise Slicer's Save interface. This panel gives you the option to save the MRML scene file and all unsaved data by default. You may optionally choose to rename the scene, to change the destination directory for any or all of the data to be written, and to save data that has not been modified during your session too. File->Slicer Data Bundle This option saves all Data and the Scene File in a variety of compact bundles for convenience.

Save: Clicking the icon shown at the left from Slicer's Toolbar raises the same Save interface as selecting File->Save.

IMPORTANT: Once a MRML scene file is saved, deleting or moving any dataset that the scene references on disk will cause the scene description to become invalid. Loading a MRML scene that cannot locate its referenced data can cause unstable results.