Ask HN: How to write a Memorandum of Agreement between founders?

As part of starting up (and in order to get a commercial bank account), my partner and I need to provide a Memorandum of Agreement regarding our involvement in the company, our ownership, our responsibilities, and so on. Most of the MoAs / MoUs that I'm finding online don't pertain to startups, and I figured that this must be something that other founders here have had to work out. Are there any things you'd suggest that we pay careful attention to? Would you be able to share your paperwork where you lay out ownership / responsibilities? Any suggestions for places to find sample MoAs?