• Purpose of this document
• Contents
• Mission statement
• General principles
• Failing fast
• Invalid flags
• Command prerequisites
• Resource unavailable
• System feedback & transparency
• Flag design
• Implementing commands
• Command naming conventions
• Create/add commands
• Summary commands
• List commands
• Update commands
• Delete commands
• Link commands
• Prefer single positional arguments
• Adding flags to existing commands
• Args vs. flags
• Input files
• Output formats & exit codes
• Exit codes
• Showing/hiding fields in output
• Tables vs. key/value pairs
• Tables
• Key/value pairs
• Time format
• Colors
• Help text
• Command list
• Command help
• Miscellaneous
• Compatibility with CF releases
• Plugins