An old problem when processing images is, that a print-out often looks completely different to the on-screen display. This is due to the fact, that printers usually are not able to print as many colors as a computer monitor. Therefore several hardware and software companies have founded the ICC (International Color Consortium). Goal of the ICC was and is to define a standardized way for a uniform appearance of images and graphics an different output devices (printer, screens, ...).
The solution of the ICC are - simply said - color profiles. In the ideal case every device reading or displaying an image should have an associated color profile. The color profiles are describing how a certain device interprets a given color.
Usually you proceed like this:
If all 3 points are fulfilled, a scanned image printed or displayed on-screen looks like the original - at least in theory. In practice there are two problems:
The support of color profiles in PhotoLine is described in chapter 7.6.11 "Set Color Profile", chapter 7.6.12 "Convert With Color Profile" and in chapter 7.10.1.34 "Color Management".