To create a new file just select the menu file/new or click
the new file icon in the main toolbar.
A new page will appear on the editor (or a new window if
the parent document is windowed). This new document will
be named "newfile#1", "newfile#2", "newfile#3" ... and so on.
You must keep the habit of saving the new documents
as soon as possible to avoid any data loss due to emergency exit
or application crash.