A very major difference to note on entering a workspace with a different label is that you have access to a different set of files and no longer have direct access to the files in the workspace you just left.
Click the File Manager icon to view the contents of your home directory.
At this sensitivity level, the file you created previously, textfile.1, is not visible. As shown in the figure below, the file created at the previous label cannot be viewed from the workspace at the new label.
Create a new file (textfile.2 in example) using the Text Editor.
The new text file has a label of SECRET A B.
Use File Manager to view the contents of the home directory now.
The new file created at SECRET A B (textFile.2) is visible and the file created at CONFIDENTIAL (textFile.1) cannot be viewed.