l21.1a

<B>Digital的Unix操作系统VAX 4.2源码</B>

#print
Remember all the basic commands: 'd', 'a', 'w' and 'q'.
Make a file named 'test' that contains the following lines, exactly
as presented below.  Then type "ready".
#create Ref
maine
new hampshire
vermont
massachusetts
rhode island
connecticut
#print Ref
#user
#cmp Ref test
#log
#next
21.1b 5