Apple IIe - Page 42

42 Apple lie Users Handbook
Adding program lines to a program stored in RAM is very easy.
Just type in the line number followed by the program line. The
line will be inserted in the program in the position indicated by
its line number. For eicample, by adding the following line to the
program in lllustratio'n 3-1:
35 PRINT "216-777-5579"
the phone number for Jim Smith will be displayed on the line
following his city, state, and zip.
Program lines can be
deleted by typing the line number to be
deleted followed by Return. For example, the following entry:
30
would result in line 30 being deleted.
Program lines can be changed by merely retyping the new line .
The existing
line in the lle's memory will be replaced with the
new line. For example, the following entry:
10 PRINT "THOMAS HILL"
would result in "THOMAS HILL" being output rather than "JIM
SMITH" in the program Illustration 3-1.
NEW Command
You may have
noticed the execution of the NEW command in
Illustration 3-1. The NEW command is used to erase an old
program from memory before a new one is typed in.
The
lie can only store one program in RAM rat any one time. If
you attempt to enter a new program while another program is
already stored in RAM, the new program will be merged with the
existing program.
END Statement
Notice the last line in the program in Illustration 3-1 . That line
consists only of the line number plus the BASIC reserved word
END.