CRL is a continuation of Chocorenderlimits source port created by RestlessRodent.   Armed with new features, QoL and technical improvements, it provides the ability to assist mappers in creation of Vanilla compatible maps, as well as checking some specific scenarios via additional ingame modes. The grave/tilde [~] key opens the in-game menu which can be used to change the settings and features, few extra key bindings are available in Setup executable / Configure CRL Controls menu.