Display or set flags on registry keys.

:: Display current flags for a specific key:
reg flags <key_name> query

:: Display help and available flag types:
reg flags /?

:: Set specified space-separated flags, and unset unmentioned flags, for a specific key:
reg flags <key_name> set <flag_names>

:: Set specified flags for a specific key and its sub keys:
reg flags <key_name> set <flag_names> /s