ioctl man page lists a non-negative value that is floored as a return value indicating user error. given that it is written in standard libc, all the PLATO-base

ioctl man page lists a non-negative value that is floored as a return value indicating user error. given that it is written in standard libc, all the PLATO-based note-taking archival systems that regress in a linear fashion depending on how much bandwidth one is working on.