CALLS Windows Professional Edition includes 4 character databases, you can choose according to your needs:
  1. Standard: Approximately 9,300 commonly used characters in Traditional and Simplified Chinese
  2. Traditional: Approximately 6,400 commonly used characters in Traditional Chinese
  3. Simplified: Approximately 6,100 commonly used characters in Simplified Chinese
  4. Professional: Approximately 30,000 characters in Traditional and Simplified Chinese, including characters in Unicode Extension A/B and HKSCS2004
Tips: When you are using non-Professional database, you can press ` key (The key on left of 1) to switch to Professional database temporarily.