Yes, please see a full reference in the WriteMapper app.
You may view all of WriteMapper's keyboard shortcuts from within the WriteMapper app, by navigating to: Menu Bar → WriteMapper → Settings, which opens the Settings window. In it, select the "Shortcuts" tab.
A full list of keyboard shortcuts provided by the WriteMapper app will be shown. You may customise these shortcuts to your liking from this view as well.
Other common keyboard shortcuts, such as undo/redo shortcuts, and text editing shortcuts are available too. Please refer to this resource from Apple for common Mac keyboard shortcuts, and this one from Microsoft for common Windows keyboard shortcuts.