Greetings, Can someone please point me to documentation on how to create a language module so it can be used with #lang? I copied some module and hacked it until it worked, but I'm curious to know more details. Also, I tried to modify blame assignment (specifically I want to modify raise-blame-error and ideally not change anything else) but the only way I found was to copy the contract module and hack it. Since I copied internal/unstable APIs my module doesn't work with newer versions of Rackets, any ideas how to do this in a more future-compatible way?? Thanks in advance -- Ismael