1      The Tutorial uses several keys from the keyboard that may need explaining.
 2 
 3      When printing reaches the bottom of your terminal screen, the following
 4 line will be printed:
 5 
 6 More? (RETURN for more; DEL to discard output.)
 7 
 8 If you want printing to continue at that point, press the RETURN key or
 9 whatever key on your keyboard serves the purpose that carriage return serves
10 on a typewriter.  If you want to stop the printing, press the DEL key instead,
11 or whatever key serves the function of deleting.
12 
13      Function keys perform certain operations with the pressing of just the
14 one key.  On most keyboards, they are set apart from the regular letter and
15 number keys and are marked F1, F2, etc.  Use of the F1 and F2 keys are
16 explained by options 2 and 3 of this menu.  F3 causes the menu you were most
17 recently working in to be redisplayed, unless you are in the first menu, the
18 one displayed above right now, when you use F3.  If you are in the first menu,
19 you will get the menu before the last if you press F3.  You cannot get to the
20 first menu by using the F3 key, but each menu contains an option for getting
21 back to the first menu.  Similarly, the first menu provides options for
22 getting to every other menu in the Tutorial.
23 
24      F4 ends the tutorial session and puts you back at "command level."
25 
26      Some keyboards don't have function keys, so you have to use another
27 mechanism instead.  That involves pressing the ESCAPE key down quickly and
28 releasing it and then typing a second character.  For example, use the ESCAPE
29 key with the letter q for ending the tutorial session.  The ESCAPE key is
30 usually labelled ESC, though it may also be labelled ALT or ALTMODE.  Other
31 uses for the ESC key are described later in the Tutorial.  The ESC sequences
32 that substitute for function keys are:
33 
34      ESC g -- F1
35      ESC c -- F2
36      ESC p -- F3
37      ESC q -- F4
38 
39      The CONTROL key is similar to ESC in that it is used in combination with
40 other keys.  It is different, however, in that when using it you hold it down
41 while pressing the other key.  The key is usually labelled CTL, though it may
42 also be labelled CTRL or CNTRL.  Uses for this key are described later in the
43 Tutorial.