INITIALS (Lat. initialis, of or belonging to a beginning, inilium), the first letters of names. In legal and formal documents it is usually the practice in appending a signature to write the name in full. But this is by no means necessary, even in cases where a signature is expressly required by statute. It has been held that it is sufficient if a person affixes to a document the usual form in which he signs his name, with the intent that it shall be treated as his signature. So, signature by initials is a good signature within the Statute of Frauds (Phillimore v. Barry, 1818, i Camp. 513), and also under the Wills Act 1837 (In re Blewitt, 1880, 5 P.O. 116).
Note - this article incorporates content from Encyclopaedia Britannica, Eleventh Edition, (1910-1911)