⟦b9f357da7⟧

TextFile

>a2:"              LESSON1 -- Moving Around the Spreadsheet
>a5:"       Welcome to the first lesson!  Here we will examine several ways
>a6:" of moving about Perfect Calc's spreadsheet.
>a8:"       But first, REMEMBER:  the commands for scrolling the current
>a9:" single window are:
>a10:"               Control---v       PAGE DOWN
>a11:"               Control---z       PAGE UP
>a13:"       In this lesson we will be splitting the screen into two windows.
>a14:" The top window, where you will be working, will hold a sample spread-
>a15:" sheet, while the bottom window will display the instructions you are
>a16:" to follow.
>a18:"       Before we create two windows let us review the two commands you
>a19:" will use for scrolling the bottom, or 'other' window:
>a21:"      Control--x  Control--v    PAGE DOWN 'Other Window'
>a22:"      Control--x  Control--z    PAGE UP 'Other Window'
>a24:"       At this time move the cursor to line 34 using the 'down arrow'
>a25:" key, or the NEXT LINE Command  (Control--n).  If you go to far use the
>a26:" 'up arrow' key, or the PREVIOUS LINE Command (Control--p).
>a28:"       Type the CREATE TWO WINDOWS Command which we learned in the
>a29:" Introductory Lesson:
>a30:"                           Control--x  2        
>a31:"     Answer 'n' for no to Perfect Calc's question "Synchronize windows?"
>a32:"       When two windows are being displayed, move the cursor to the top 
>a33:" window, using the OTHER WINDOW Command:
>a35:"                       Control--x  o  (small letter 'o')
>a37:"       From now on scroll the bottom window to read the instructions,
>a38:" again using:
>a40:"       Control--x  Control--v  PAGE DOWN 'Other Window'
>a41:"       Control--x  Control--z  PAGE UP 'Other Window'
>a43:"       We are now going to call another file into the top window.  This
>a44:" is a capability unique to Perfect Calc.  No other electronic spread-
>a45:" sheet allows two separate  files to be displayed to the 
>a46:" screen simultaneously.  With the cursor in the top window, type the
>a47:" FIND FILE Command:
>a48:"                     Control---x  Control---f
>a49:"       Perfect Calc responds with the message in the Prompt Line:
>a50:"                   "File to find: <CR> "
>a51:"       Type the filename "stockhex.pc" followed by a carriage return.
>a53:"       Perfect Calc reads this file into the top display window.
>a54:" It is a spreadsheet for recording stock purchases.  As we will see 
>a55:" shortly, it extends off-screen, both down and to the right.
>a57:"       Let us explore this spreadsheet using Perfect Calc's cursor
>a58:" commands.
>a61:"      Although your KAYPRO II computer has arrow keys for moving the 
>a62:" the cursor, Perfect Calc also provides the following commands:
>a63:"    Control--f     Move cursor Forward (to the right) by one  -->
>a64:"    Control--b     Move cursor Backward (to the left) by one  <--
>a65:"    Control--n     Move cursor to Next Line (down) by one     
>a66:"    Control--p     Move cursor to Previous Line (up) by one   ^
>a67:"          NOTE: Perfect Calc commands are 'mnemonic'. That is, each
>a68:" command sounds like what it does.  Thus, 'Control--f' moves the cursor
>a69:" 'forward'.  Try these commands now.
>a71:" Using the right-arrow key, or the FORWARD Command (Control--f), move
>a72:" the cursor to the righthand edge of the screen.  With the cursor in 
>a73:" the last column, type Control--f one more time.  What happens?  The 
>a74:" screen is erased and redrawn to include the next 'off-screen' column,
>a75:" while at the left margin, column 'a' has disappeared.  The entire
>a76:" window has been moved one column to the right on the larger spread-
>a77:" sheet.
>a79:"       Type the FORWARD Command several times in rapid succession.  This
>a80:" time the window is erased and advanced several columns at one time. The
>a81:" other cursor commands work in a similar fashion, advancing the cursor
>a82:" one position at a time, redrawing the screen as necessary.
>a83:"  Several commands move the cursor to the boundaries of the spreadsheet:
>a84:"    Control--a     Move to Beginning of Line
>a85:"    Control--e     Move to End of Line
>a86:"    Escape...<     Move to Top of Column (left angle-bracket)
>a87:"    Escape...>     Move to Bottom of Column (right angle-bracket)
>a88:"       With the cursor anywhere in the middle of the spreadsheet, type
>a89:" the BEGINNING OF LINE  Command,  Control--a.  The cursor jumps to the
>a90:" beginning of the current line.
>a91:"       Type the END OF LINE Command,  Control--e.  The cursor jumps to
>a92:" the last entry in the current line, column 'l'.
>a93:"     Type the TOP OF COLUMN Command,  Escape...<   The cursor jumps to
>a94:" line 1 in the current column. (Remember to hold the shift key for '<' )
>a95:"      Type the BOTTOM OF COLUMN Command,    Escape...>     The cursor 
>a96:" jumps to line 18, the bottom of the current column.
>a97:"       Note that the distinctive feature of these four commands is that 
>a98:" they take the cursor ONLY to the boundaries of the defined spreadsheet.
>a99:" They will not go beyond it.
>a100:"       Let us go to the far limits of Perfect Calc's spreadsheet by
>a101:" using the PAGE RIGHT Command, which moves the screen to the right one
>a102:" entire screen full of columns:
>a103:"                                 Escape...v
>a104:"       Execute this command as many times as necessary to reach the 
>a105:" last column in the spreadsheet, column 'Z'.
>a107:"      Then, using the PAGE DOWN Command, Control--v, move to down to
>a108:" line 128.  This is the mid-point of the available spreadsheet.
>a110:"       As you can see Perfect Calc provides you with a GIANT spread-
>a111:" sheet!  Amazingly, you can have as many as SEVEN of these giant spread-
>a112:" sheets in memory at one time, switching back and forth between them
>a113:" with ease. We'll examine this capability in later lessons.  Again, this
>a114:" capability is not available with other major electronic spreadsheets.
>a115:" The GOTO Command
>a116:"       Now, is there a quick way to get back to position 'a1' in the 
>a117:" stock portfolio spreadsheet?  Yes!  Type the GOTO Command:
>a118:"          >        æa single right angle-bracketå
>a119:"   Perfect Calc responds with the message in the Prompt Line:
>a120:"       "GO TO:     "
>a121:"  Type the coordinates of the entry position that you wish to "Go to"--
>a122:" i.e. 'a1' -- followed by a carriage return.  Perfect Calc immediately
>a123:" jumps the cursor to position 'a1', redrawing the screen as necessary.
>a124:"      We've just examined the commands for moving the cursor.  As you
>a125:" can see, you have quite a few available to you.  It may take a while to
>a126:" remember all of these, even though the command characters correspond 
>a127:" with the command names. The Help Menu serves to assist you while you're
>a128:" learning the commands. 
>a129:"    For instance, you can now go the Help menu and review all the cursor
>a130:" commands we've just introduced.  Type a '?' followed by '1' to 
>a131:" select 'cursor' commands.  When you're ready to leave the Help Menu
>a132:" type Control--x Control--v to scroll the bottom window forward.
>a133:" The UNIVERSAL Repeat Command
>a134:"       All of Perfect Calc's cursor commands can be repeated using the 
>a135:" UNIVERSAL Repeat Command.  Type:    Control--U
>a136:"   Perfect Calc responds with the message in the Prompt Line:  "Arg: 4"
>a137:"       "Arg:  4 "  ( 'argument' ) means that whatever command follows
>a138:" will be repeated 4 times (the default repetition). You can change this
>a139:" default by typing a number.  For example, type '20'.
>a140:"       The message changes to "Arg:  20 ".
>a141:"       Now type the right arrow key, or Control--f.
>a142:"       The cursor jumps twenty columns to the right of its present
>a143:" position  (to column 'u').  Practise repeating the cursor commands,
>a144:" using this UNIVERSAL Repeat Command.
>a146:"     This concludes Lesson 1.  You are now ready to proceed to 
>a147:" Lesson 2, which deals with 'Entering Data.'  To do this you will first
>a148:" need to clear computer memory, before calling up the next lesson.
>a149:" The steps for this, which are outlined below, are simple.
>a150:" However, READ THROUGH THEM COMPLETELY before beginning to execute them,
>a151:" since once memory is cleared, this lesson will be erased from the
>a152:" the screen and we will have no way of communicating.
>a154:"     To clear computer memory enter the CLEAR ENTIRE MEMORY command:
>a155:"                      Control--x  Control--k
>a156:"     Perfect Calc will respond with the message: "Kill ENTIRE Memory?"
>a157:"                       Answer "yes"
>a158:"     Perfect Calc will erase all files from memory, including this
>a159:" lesson, presenting you with a blank screen.
>a160:"     Read Lesson 2 into memory using the FIND FILE Command:
>a161:"                      Control--x  Control--f
>a162:" Perfect Calc will respond with the message:
>a163:"                   "File to find <CR>:"
>a164:"    Enter the filename "lesson2.pc", followed by a carriage return.
>a166:"     Perfect Calc will display Lesson 2 to the screen ready for you
>a167:" to continue.
>a168:"     If you do not wish to continue with Lesson 2, type the
>a169:" QUIT Command:
>a170:"                      Control--x  Control--c
>a172:"       Answer 'y' for yes to Perfect Calc's message "Ignore changes this
>a173:" session?"
>a174:"     Perfect Calc will return you to your CP/M disk operating system.
>a176:"                     END OF LESSON 1
>a1
«eof»
DataMuseum.dk

CP/M

⟦b9f357da7⟧ TextFile

Derivation

TextFile
