Paste
Wolfram Kernel
Paste[opts___]pushes the content of a clipboard to a notebook as a new cell.
Blocking function. Avoid using it in timers like SetTimeout, external event handlers such as InputButton or Button, or within AsyncFunction.
Options
In a case of a lost window context provide (executed by a timer or an external event)
"Window"
Specify explicitly window from which to read a clipboard content. By the default is CurrentWindow