pantheon-terminal --help-all
[INFO 00:19:24.537835] Application.vala:155: Terminal version: 0.4.0.3
[INFO 00:19:24.537996] Application.vala:157: Kernel version: 4.4.0-57-generic
[DEBUG 00:19:24.541766] Settings.vala:163: Loading settings from schema 'org.pantheon.terminal.saved-state'
[DEBUG 00:19:24.545045] Settings.vala:163: Loading settings from schema 'org.pantheon.terminal.settings'
Usage:
  pantheon-terminal [OPTION...]

Help Options:
  -h, --help               Show help options
  --help-all               Show all help options
  --help-gtk               Show GTK+ Options

GTK+ Options
  --class=CLASS            Program class as used by the window manager
  --name=NAME              Program name as used by the window manager
  --gdk-debug=FLAGS        GDK debugging flags to set
  --gdk-no-debug=FLAGS     GDK debugging flags to unset
  --gtk-module=MODULES     Load additional GTK+ modules
  --g-fatal-warnings       Make all warnings fatal
  --gtk-debug=FLAGS        GTK+ debugging flags to set
  --gtk-no-debug=FLAGS     GTK+ debugging flags to unset

Application Options:
  -d, --debug              Enable debug logging
  -a, --about              Show About dialog
  --display=DISPLAY        X display to use