Add, Delete, and Move Lines
You normally press Enter to start a new line, but you can also start a new line even if the caret is currently in the middle of another line.
Add a new line
Press Shift+Enter to add a new line after the current line.
Press Ctrl+Alt+Enter to add a new line after the current line.
Instead of starting an empty line, you can duplicate an existing line and edit it as required.
Duplicate a line or selection
Place the caret at the line to be duplicated, or select the desired fragment of text.
Press Ctrl+D.
To delete the current line
Press Ctrl+Y.
To move a line up or down
Place the caret at the line to be moved.
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Do one of the following:
Choose from the main menu.
Press Shift+Alt+Up or Shift+Alt+Down.