Antialiasing in Firefly: use the Pixel Samples value. Pixel Samples at 1 means no antialiasing, pixel samples at 3-5 gives moderate antialiasing, higher values tend to blur the image.

As for the export format, TIFF is fine. Actually every format that does not use lossy compression and keeps alpha channels will do the job. PNG, TIFF, PSD are all good. BMP, JPG are NOT good.

The pen is mightier than the sword. But if you literally want to have some impact, use a typewriter

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