Capitalization: sentence start

One of 97 rules YabLab tracks in German writing.

A typical slip

Er kam spät. dann ging er.

Er kam spät. Dann ging er.

The rule

Capitalization: sentence start

Spelling rules connect a word’s sound, structure and conventional written form. The correction preserves the form readers expect to recognize.

Sound
Do not rely on hearing alone Several letters or spellings can represent the same sound, and some letters are not pronounced clearly.
Structure
Look for the word family Prefixes, suffixes and related words often reveal letters that speech hides.
Convention
Learn the complete pattern Spacing, hyphens, accents and capitals are part of a word’s spelling, not decoration.

What YabLab does with this mistake

  1. Catches it right as you write — comments, email, docs.
  2. Explains the why in your language, not just the fix.
  3. Helps you practice it until it is gone for good.