Commodore Plus 4 - Page 63

RUN
When you run this program, the first column on your screen fills with
diamonds. There are 25 diamonds printed, but the first three disappear
al the top of the screen because the word READY surrounded by two
blank lines always appears at the end of the program. There are, then,
25 rows. A little deductive logic tells you that your Plus/4 has 40 col
umns and 25 rows. The Plus/4 has 1000 different positions on the
screen for letters, numbers, graphic symbols, etc.
NOTE: Sometimes you'll type a particularly long line on your
Plus/4, such as this:
10 PRINT "I LIKE YOUR TOUCH ON MY KEYBOARD. DO YOU
COME HERE OFTEN?'1'
(Thai's quite a line—over 50 characters long!)
You'll notice that as you type this, you run out of room on one row.
But keep typing; the Plus/4 automatically moves on to the next row
and continues printing there until your line is finished. You can type
as many as 80 characters on one program line {up to two full rows).
Now try RUNning this one line program. The message is printed on
two rows. If your line is longer than one row, the Plus/4 lets it spill over
to the next row. The Plus/4 considers the line ended when you press
the RETURN key. not when you type to the end of the row.
You'll get used to this as you use your Plus/4.
Now type this program:
NEW
10 PRINT1' ¥
20 GOTO 10
RUN
leave a space on
each side of the heart
press shift
andS
When you RUN this program, you can see that it's possible to tell the
Plus/4 exactly where to PRINT something on the screen.