Why is Micro$loth so lame ?!
It does it pretty much the same way as the normal console program,
with some enhancements.
Drag the mouse to select the text. Press the enter key to copy it.
Ctrl-V where you want to insert it.
Alternatively, in the power shell itself:
Select text with mouse drag.
Right-click it to copy.
Right-click anywhere in the console to insert it on the command line.
Else, use the system menu on the top left corner of the window for
edit menu selections.
This is the way power users use it, you must not be up there yet. :)