Unlike Save As, the Export command writes a copy of the current document in a new file with the chosen format, but keeps the current document and format open in your session.
The Export command opens the system file picker, where you can enter the name and format of the exported file.
File dialogs - such as Open, Save As, Insert text and the like - are available in two different ways:
As native file picker dialogs of the window manager of your operating system.