Highlight changes in two lines of text. Useful to language teachers to highlight corrections.This is a simple extension that highlights the differences in two lines of text. It was made for language teachers who want to highlight their corrections. It is activated by selecting two lines of text, the original text, and the corrected text, and pressing Shift + Alt + C on the keyboard. Of course, the text must be in an editable field and support HTML formatting (for the colours).