With over 40 custom options, tailor MDBG Chinese Reader to best fit your needs today--and then change it tomorrow as your proficiency in Chinese improves.
From the Main window, click File > Settings

Settings for
Chinese Reader Standard and Professional
editions:
Operation
Popup
Show...
Speech
MLX Auto-translations
Copy+/Export
Services
Personalize your custom dictionaries. Tune history tracking
Change basic display settings
Hear high-quality Mandarin and Cantonese voices with rate control
Free Chinese-German and Chinese-French dictionaries. For Chinese Reader Professional Edition