Constant USAGE 

pub const USAGE: &str = "sshclip\n\nUsage:\n  sshclip [OPTIONS] [FILE|-]\n  sshclip doctor\n\nOptions:\n  -s, --selection <clipboard|primary>  Clipboard selection (default: clipboard)\n      --max-bytes <N>                  Maximum input bytes before fail/truncate (default: 75000)\n      --truncate                       Truncate input at --max-bytes instead of failing\n      --stdout                         Emit escape sequence to stdout instead of /dev/tty\n      --quiet                          Suppress success message\n      --strict                         Treat best-effort warnings as failures\n      --strict-tmux                    Fail with exit code 6 on tmux integration warnings\n      --no-tmux-fix                    Do not mutate tmux allow-passthrough\n      --tmux <auto|off|force>          tmux wrapping behavior (default: auto)\n      --concat                         Concatenate multiple inputs in argument order\n      --separator <TEXT>               Separator for --concat inputs (default: newline)\n  -h, --help                           Print help\n  -V, --version                        Print version\n";