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END
Stops the currently running program, leaves variables intact.
EXP( expr)
Raises e (2.71828183...) to the specified power.
FLASH
Sets future output from PRINT statements to flash on the 40-column
text screen. Not easily available in 80-column modes.
Several to all of ProDOS's BASIC.SYSTEM versions went into TRACE mode
if your code had a 'THEN FLASH' evaluated.
FN var(arg)
Executes the named function (previously defined with DEF FN and
arguments.
FOR varb = start TO end [STEP increment]
This sets up a loop. You can only loop over reals; the increment
defaults to 1 unless specified. The loop stops when 'varb' is greater
than 'end' if 'increment' is positive, or less than 'end' if
'increment' is negative. The counter variable 'increment' can be zero,
in which case this is an infinite loop. It is legal to modify the loop
variable in the middle of a loop. The contents of a FOR loop are
always executed at least once, since it only exits from the NEXT
statement.
In addition, the start, end and increment parameters are evaluated
only once, at the start of the loop, so any changes to them will not
be reflected.
FRE(expr)
If expr is not zero, this returns the amount of free memory is
available to Applesoft. [If the return value is greater than 32767,
will return the 2's complement value; add 65536 to the value to get
the correct value.] FRE(0) forces a garbage collection of unused
strings from the memory pool; it may be fairly slow at times.
GET varb
GET only waits for one character, and returns immediately on getting
that without printing it to the screen. Thus, 'GET A$' is an excellent
way of waiting for any key, or building a better INPUT, etc. GETting a
real or an integer is not really recommended-- if the user types a
non-numeric character (0-9, +, -, ,, E, etc), the program will stop
with an error.
GOSUB linenum
Saves the current position within the code, and branches to linenum,
which must exist. With a RETURN, you can go back to the original
position, or use POP to 'forget' the most recent gosub return address.
There is a limit of 24 nested GOSUBs, though active FOR loops and an
error handler will reduce this.
GOTO linenum
Branches program execution to the specified line, an error if the line
doesn't exist.
GR
Sets the screen to Mixed Lores graphics mode (40x40+4 lines of text),
and sets the top 40 graphics rows (20 text screen lines) to all black.