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 creating vanilla-compatible maps, as well as checking some specific scenarios via additional in-game modes. The grave/tilde [~] key opens the in-game menu which can be used to change the settings and features.
The main idea is still the same: this is a crash-prone source port that prints in-game warnings instead of crashes. However, no changes have been made to the drawing code, and important bugs like Tutti-Frutti and Medusa are still there to preserve DOS executable behavior and look. Medusa is no longer critical, however, and does not crash Windows executables. For vanilla-compatibility purposes, despite being crash-prone in complex game scenes, this is not limit-removing source port and it will not be able to load huge maps.
Important bits of code have been ported from International Doom, Crispy Doom and DOOM Retro.
Please visit the project's Wiki for more details and information. There is also an official thread on the Doom World forum.
Source code is available on GitHub project page: https://github.com/JNechaevsky/CRL
Old versions of original Chocorenderlimits can be found on the Historical page.