+*reproducible=*"__{yes|no}__"::
+ Create reproducible images.
+
+*loginstall=*"__<DIR>__"::
+ Log all files installed from the host to _<DIR>_.
+
+*uefi_stub=*"_<FILE>_"::
+ Specifies the UEFI stub loader, which will load the attached kernel, initramfs and
+ kernel command line and boots the kernel. The default is
+ _/lib/systemd/boot/efi/linux<EFI-MACHINE-TYPE-NAME>.efi.stub_
+ or _/usr/lib/gummiboot/linux<EFI-MACHINE-TYPE-NAME>.efi.stub_
+
+*kernel_image=*"_<FILE>_"::
+ Specifies the kernel image, which to include in the UEFI executable. The default is
+ _/lib/modules/<KERNEL-VERSION>/vmlinuz_ or _/boot/vmlinuz-<KERNEL-VERSION>_
+