||Map Transfer Function: When checked, PStill will attempt to map native PS transfer functions to PDF. Highly recommended.|
Take over overprinting: This option has no effect if you do not plan to color separate the PDF output. You don’t see overprinting on screen or when printed on a normal composite printer (gray/color) printer.
- for documents intended for office and internet use, turn this option off
- for prepress work you MAY turn this option on, if
a) your workflow needs it later
b) you trust the overprinting setup in your PS input
Overprinting can have negative effects. If overprinting is applied wrongly the separation can leave areas that should ‘knock-out’ untouched and this may cause very colorful but wrong color areas. No overprint will produce correct color results but may cause white edges when output plates are not exactly aligned during printing.
Use spot colors: This option is also for color separations. When unchecked, the whole job will be output using CMYK or RGB colors. When checked, spot colors in the PS input will be preserved.
Rotate Output: When anything other than 0 is selected, PStill will rotate the output PDF page by 90 (on its side), 180 (flipped upside down), or 270 (on its other side) degrees.