>"The Algol 68 Genie project preserves and promotes Algol 68 out of educational as well as scientific-historical interest, by making available a recent checkout

>"The Algol 68 Genie project preserves and promotes Algol 68 out of educational as well as scientific-historical interest, by making available a recent checkout compiler-interpreter written from scratch by Marcel van der Veer, together with extensive documentation for both the language and this new implementation." Can someone say what a "checkout compiler-interpreter" is? I am not familiar with this term. Is this something specific to Algo 68?