The Author editor includes a built-in editor for MathML notations. Double clicking inside a MathML notation starts the MathML editor in a new dialog where the mathematical symbols of the notation are edited.
The minimum font size for mathematical symbols and the MathFlow SDK configuration are set in the Preferences.
If a MathML file is included in the current project that is opened in the Project view it can be opened directly in the MathML editor with the action that is available on the contextual menu of the Project view.