To create a new document or to open a document, proceed as follows:
▪To create a new document, choose the ribbon command File | New 
.
| Note: The option "New program window" (see below) can only be accessed via the dialog box: To do so, click on the icon itself. If you click on the small arrow of the icon, however, the document templates used so far will be displayed for quick access. |
▪To open an existing document, use the ribbon command File | Open 
.
| Note: The option "New program window" (see below) can only be accessed via the dialog box: To do so, click on the icon itself. If you click on the small arrow of the icon, however, you can choose from the most recently opened files. |
These two commands New and Open are described in detail in Basics.
Option "New program window"
The option New program window in the dialog box of these two commands has the following significance: When it is enabled, the document appears in a new program window. If it is disabled, the document will be opened with a new tab in the existing program window.
This setting is also saved and is applied each time a document is opened, both when new documents are created and when existing documents are opened.
(Note: In the Android/iOS version for smartphones, a separate program window is always opened, while in the version for tablets, a new tab is always opened in the same program window.)