Compatibility

Ultra Fractal 5 accepts almost all formulas written for earlier versions of Ultra Fractal. There are many changes in the compiler since Ultra Fractal 4, but the language has been changed in such a way that existing formulas will still compile. The new language features are accessed with semi-reserved keywords, meaning that you can still use them as variable names. This ensures that there will not be a conflict with existing formulas.

There are some minor differences in the compiler since Ultra Fractal 2:

The formula compiler is largely compatible with Fractint's parser and most Fractint formulas can be used without modification. There are a few exceptions, however:

Generally, formulas that depend on the forgiving behaviour of Fractint's parser will not be accepted. Often Fractint accepts formulas that contain syntax errors and it will still produce a picture. Ultra Fractal will refuse to load such formulas. This is useful, because it helps you to write clear and understandable formulas, and it might point you in the direction of possible errors.

Next: Execution sequence

See Also
Invalid operations