Use the asterisk deliberately and learn the writer's configured undo behavior.

Check the paper tape after each correction so an accidental extra key does not become a repeated habit.

练习输入: *, undo, paper tape

目标: 98.00% 准确率.

Asterisk and Correction Guided Practice: S- / * / T- / * / K- / * / P- / * / W- / *

Asterisk and Correction Review: S- T- / * / K- P- / * / W- H- / * / R- A / *