Vector Basic Interpreter Basic 80 Reference Manual - page 14
Interrupts program execution
and
returns
to
BASIC-SO command level.
Backspace.
Deletes the last character typed.
Tab.
Tab stops are every eight columns.
output
second
while
Control-o
execution
restarts
Halts
program
continues.
A
output.
Retypes
the
line
that
is
currently
being
typed.
Suspends program execution.
Resumes program execution after a Control-S.
Deletes
the
line
that
is
currently
being
typed.
Constants are the actual values BASIC uses during execution.
There are two types of constants:
string and numeric.
A string constant is a sequence of up
to
255
characters
enclosed in double quotation marks •.
string constants:
alphanumeric
Examples of
"HELLO"
"$25,000.00"
"Number of Employees"
Numeric constants are positive or negative numbers.
Numeric
constants
in
BASIC
cannot contain commas.
There are five
types of numeric constants:
Whole numbers
between
-32768
and
+32767.
Integer
constants do not
have decimal points.
2.
Fixed Point
constants
Positive or negative real numbers,
i.e., numbers that contain
decL~al
points.