Why does Olan allow illegal Roll combinations?
You can go to Tools->Options in the menu and turn off “Allow non-FAI figures”. By default, the software allows you to enter invalid entry/exit lines, same direction rolls, spins on horizontal lines, etc, to give you better visual feedback. It even adds a “fix” 1/4 roll when needed. If you turn this option off, you will get a crossed red box every time a figure is not strictly legal. You also won’t be able to display the extended 4-minute freestyle elements.If you write a free program, use Tools->Verify to ensure the sequence is valid by all the CIVA/IAC rules.