I remember feeling angry when I learned about the undocumented MBR switch for FDISK. There I was, beginning to learn to spell words with 6 or more letters, thin

I remember feeling angry when I learned about the undocumented MBR switch for FDISK. There I was, beginning to learn to spell words with 6 or more letters, thinking I had to use a hex editor to clean up the MBR. All that effort with no guidance whatsoever that could have been minimized with one extra line of documentation.