啓 - disclose, open, say

enlightenment; illumination

(divine) revelation

enlightenment; development; edification; public awareness; illumination; education; inspiration

Dear (so and so); Dear Sir; Dear Madam; To Whom It May Concern

edification; enlightenment; guide

self-improvement book

ceremonial folding fan

this will just be a short note; I'm writing to tell you

self-development; self-enlightenment

attendance (of the Empress)

Dear Sir or Madam; Dear Sirs; Gentlemen

Dear (name)