5.7 Fractal Type Parameters
TYPE=[name]
Selects the fractal type to calculate. The default is type "mandel".
PARAMS=n/n/n/n...
Set optional (required, for some fractal types) values used in the
calculations. These numbers typically represent the real and imaginary
portions of some startup value, and are described in detail as needed in
Fractal Types (p. 43).
(Example: FRACTINT TYPE=julia PARAMS=-0.48/0.626 would wait at the
opening screen for you to select a video mode, but then proceed straight
to the Julia set for the stated x (real) and y (imaginary) coordinates.)
FUNCTION=[fn1[/fn2[/fn3[/fn4]]]]
Allows setting variable functions found in some fractal type formulae.
Possible values are sin, cos, tan, cotan, sinh, cosh, tanh, cotanh, exp,
log, sqr, recip (i.e. 1/z), ident (i.e. identity), cosxx (cos with a pre
version 16 bug), flip, zero, one, asin, asinh, acos, acosh, atan, atanh,
sqrt, abs (abs(x)+i*abs(y)), cabs (sqrt(x*x+y*y)). New additions are the
various rounding-to-integer functions: floor (round down), ceil (round
up), trunc (round toward zero), and round (round to nearest).
FORMULANAME=[formulaname]
Specifies the default formula name for type=formula fractals. (I.e. the
name of a formula defined in the FORMULAFILE.) Required if you want to
generate one of these fractal types in batch mode, as this is the only
way to specify a formula name in that case.
LNAME=[lsystemname]
Specifies the default L-System name. (I.e. the name of an entry in the
LFILE.) Required if you want to generate one of these fractal types in
batch mode, as this is the only way to specify an L-System name in that
case.
IFS=[ifsname]
Specifies the default IFS name. (I.e. the name of an entry in the
IFSFILE.) Required if you want to generate one of these fractal types in
batch mode, as this is the only way to specify an IFS name in that case.