The After=graphical.target directive is used within a systemd unit file to specify that the service should start after the specified target, in this case, the graphical interface, has been reached during the boot process. The Requires=graphical.target establishes a strong dependency, but doesn't specify order. The BindsTo=graphical.target establishes an even stronger binding dependency, but also doesn't specify order. Wants=graphical.target creates a weaker dependency and doesn't guarantee the service will start after the graphical interface.