Definitions for "Spelling"
The act of one who spells; formation of words by letters; orthography.
forming words with letters according to the principles underlying accepted usage
the convention governing the representation of words by letters in writing systems
Spelling follows The Concise Oxford Dictionary (Tenth Edition 2001), apart from rare exceptions where common practice in the field of waterways differs from this.
Keywords:  pertaining
Of or pertaining to spelling.