Apple IIe - Page 44

44 Apple lie Users Handbook
Every statement in Applesoft BASIC must contain at least one key
or reserved word. A keyword iden tifies the calculation, decision,
input , or output function to be performed. The keywords are
described
individually in Chapter4 and are listed in alphabetical
order in Appendices A and B.
In addition to keywords , numeric constants, string constants,
variables, and special symbols may appear in a BASIC statement.
These are
known as the statement parameters.
Applesoft BASIC allows the user to place more than one
statement on a single program line. Multiple statements must be
separated
with a colon (:). The following is an example of a
multiple statement program line :
10 A= B *?:PRINT B
Listing a Program
As mentioned earlier , the LIST command can be used to display
program lines currently stored in RAM . Remember , if the NEW
command is issued, the program in RAM will have been erased,
and can
no longer be displayed by LIST .
LIST is used in the following configuration :*
LIST [line 1 - line 2]**
where line 1 is the line number of the first line to be listed, and
line 2 is the line number of the last line to be listed.
*In this book , a standard format will be used to describe BASIC
keyword configurations. The keyword will be displayed in our
regular type style in upper case. Parameters will be displayed in
our italic type style in lower case. Optional parameters will be
enclosed in brackets.
** This option is only available in Applesoft. A comma may be
substituted
for the hyphen.