You can prevent user input into the terminal from being passed to the application which is currently running in the terminal. This will prevent any keypresses, mouse clicks and mouse movement from affecting the application. You will still be able to interact with the terminal itself using the keyboard for scrolling and your mouse for selecting text. You will also be able to copy selected text from the terminal, but you will not be able to paste text into the terminal.
To use the read only mode:
Right click in the Terminal window or press the menu button in the top-right corner of the window.
Select Read-Only so that it is checked.
You can disable the read only mode by unchecking Read-Only.
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