Thanks for such a contribution. > Add an extended Backus–Naur form (EBNF) syntax file for Can it matter to mention the specific file format specification version which should be applied finally? Would you like to refer to any standard variant? > bootconfig so that user can logically understand how they Wording alternative “… that users can …”? > can write correct boot configuration file. Related development tools provide some benefits then, don't they? … > +++ b/Documentation/admin-guide/bootconfig.ebnf … > +digit = "0" | "1" | "2" | "3" | "4" | "5" | "6" | "7" | "8" | "9" ; Can the specification of such alternatives (or value ranges) become more compact (depending on a selected standard)? … > +++ b/Documentation/admin-guide/bootconfig.rst … > +Here is the boot configuration file syntax written in EBNF. I suggest to replace the abbreviation “EBNF” by the term “extended Backus–Naur form” in such a sentence. Regards, Markus