Only write a partial header to avoid running afoul of limitations on the dimensions.
Only write a partial header to avoid running afoul of limitations on the dimensions.

mockingbirdnest/Principia,pleroy/Principia,pleroy/Principia,mockingbirdnest/Principia,pleroy/Principia,mockingbirdnest/Principia,mockingbirdnest/Principia,pleroy/Principia