Some settings are managed by the reader (eg: font size), as a result you should not specify them during the creation of your prose instance or they will be overwritten. Check the properties from the reader component to see what is available. Usually when the reader can change a setting of prose or its enhancers it setting should be managed through it. This is to avoid having multiple source of truth.
Toggling features
By default, the reader will use the bare core reader. If you want to unlock more features you can enhance your reader with automatically supported enhancers.
For example adding the enhancer Search will unlock this menu:
We are detecting certain markers in the enhancers to verify whether they exist and are valid. This is assuming you dont fiddle with them. The general rule of enhancers is to allow augmentation but not alteration.