What is "nolimits"

NoLimits Roller Coaster Simulation is a software package available for Microsoft Windows and Mac OS X designed and built by a team of programmers and artists led by German programmer Ole Lange. It was first released in November 2001. The package includes two separate pieces of software, the NoLimits Editor and NoLimits Simulator, with a third application, the NoLimits Terraformer supported as well.