How to: Select text in DOS window.
Solution:
Click 'Mark' from the 'Edit' submenu in the 'DOS application window' menu.
1) Run the DOS application in a window.
2) Open the window menu by clicking the icon in the top-left corner of the window.
DOS window menu
3) Select 'Edit'. (A submenu appears.)
4) Select 'Mark'.
5) Click and drag the mouse diagonally to select a block of text.
6) Press ENTER to copy the selection to the Windows clipboard.
