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lesson2
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1986-05-02
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SEE LESSON 2 Screen 1
This file is marked Read-only so that SEE cannot alter the contents of the disk
file. Whatever changes you make will be thrown away when you exit SEE. You can
always start over and the file will be just like it is now.
People editing files often wish to get copies of groups of lines and place them
somewhere. SEE has a very advanced facility for accomplishing this. Move the
cursor to the line that says "This is the second line.", and hit the function
Get (F3). This tells SEE to make an internal copy of the current line. Now hit
Close (CTRL-F1) to remove this line. Finally, hit the down arrow key so that
the cursor is one line below the "first line", and hit Put (F4). This is how
you move lines.
This is the second line.
This is the first line.
SEE still has the "second line" in it's internal buffer; it you were to hit Put
again, SEE would place another identical copy into the file. Let's put the
lines back the way they were before. Move the cursor up one line to the "first
line", and hit Get (F3) followed by Close (CTRL-F1). Move the cursor down one
line, and hit Put (F4). The lines should be upside-down again.
SEE LESSON 2 Screen 2
Now, we'll do exactly the same thing as before, but using different SEE
commands. Move the cursor to the "second line", and hit Cut (CTRL-F3). Cut is
exactly the same as Get followed immediately by Close. Move the cursor down one
line and hit Put (F4).
This is the second line.
This is the first line.
This is the third line.
Cut, Get, Put, and Paste (which we haven't tried yet) all share the same buffer.
If you hit Cut or Get and there is already something in the buffer, the stuff in
the buffer is discarded.
Hit Put again. As was mentioned earlier, SEE still has the same line in it's
buffer. Hit Cut to get rid of this line.
SEE LESSON 2 Screen 3
SEE has a few simple commands for moving around the screen quickly. These are:
Tab - the tab key moves you forward to the next tab stop, just
like a typewriter. Tab stops are every four columns.
Ctrl-U - moves you backwards to the previous tab stop.
Ctrl-arrow - holding the control key down while pressing the left or
right arrow key moves eight spaces instead of one.
Home - moves the cursor to the beginning of the line. If you
are already at the beginning of the line, Home moves
you to the beginning of the first line on the screen.
End - moves you to the end of the line. If you are already at
the end of the line, End moves you to the end of the
last line on the screen.
Try each of these commands a few times.
SEE LESSON 2 Screen 4
Similarly, SEE has a few commands to move you quickly through a file.
Ctrl-Page - holding the control key down while hitting Pg Up or
Pg Dn moves you four pages instead of one.
Ctrl-Home - holding the control key down while hitting Home moves
you to the beginning of the file.
Ctrl-End - holding the control key down while hitting End moves
you to the last line of the file.
Generally speaking, if a key near the arrow keys does something, using Ctrl with
that key does more of the same.
Try each of these commands now. Remember to get yourself back to page 5 when
you're done trying them out...
SEE LESSON 2 Screen 5
The next command we'll cover is Search. Hit Home twice so that the cursor is at
the upper left corner of the screen. At the bottom of the screen is the word
"apropos"; we will search for this word. Hit the key labeled ESC. The cursor
will jump down to the status line, and the word "Enter: " will appear. Now,
type the word "apropos" (without the quotes). Hit Search (F10). When you hit
Search, the word "Enter: " and your input will disappear, and the cursor will
jump to the first occurance the word, which is on line 3 of this paragraph. Hit
Search (F10) again immediately; the cursor will jump to the second occurance,
which is on line 5 of this paragraph. Search remembers what it was searching
for, and does it again. Now hit Search again. The cursor will jump to the last
occurance (below). If you hit Search again, nothing happens. SEE looks for the
word again, but it's not to be found, so SEE does nothing.
Apropos
Finally, the insert key. Move the cursor right one space, and insert a second
"p". Now hit the insert key, move the cursor right so that it's underlining the
second "o", and type "riate". Notice that the cursor turned into an underscore
to flag this change in behavior. Hit the insert key again; now things are back
to normal.
SEE LESSON 2 Screen 6
Summary of the commands covered in this lesson:
Get (F3) - Get a copy of the current line
Cut (Ctrl-F3) - Cut the current line out of the file
Put (F4) - Put something previously Get or Cut into the file
Tab - move to the next tab stop
Ctrl-U - move to the previous tab stop
Home - move to the beginning of the line
End - move to the end of the line
Ctrl-arrow - move left or right 8 spaces
Ctrl-Pg - move up or down 4 pages
Ctrl-Home - move to the beginning of the file
Ctrl-End - move to the end of the file
ESC "text" Search (F10) - Search for "text"
Insert - change inserting characters to/from overwriting characters
You have now learned about half the commands in SEE.
End of Lesson 2