Vim

Commands

• go to the last line - G
• delete all lines - dG
• replace all substrings with empty - :%s/phrase to delete//gc
• turn off visual mode - :set mouse-=a

Edit multiple lines at once

1. Put cursor on the first line
2. Hit <ctrl>+v to enter visual mode
3. Select all needed lines above/below
4. Hit <shift>+i to enter edit mode
5. Type text
6. Hit <esc>