Activity 1: Pre/Post Conditions
	  Activity 2: A Special Linked List
    
When you are copy and pasting large blocks of code, usually something is not right. Knowing how to copy and paste, for code re-factoring, is a useful skill to know. The following commands will speed up your copy/paste abilities.
C-<SPC><SPC> is the space bar.  This sets a
	mark in the buffer.  You can then move your cursor around the
	buffer, effectively "highlighting" everything from the mark,
	to the current cursor location.
      M-w
    C-w
    C-y
    M-y