In two films about the Titanic, Murdoch was portrayed shooting passengers and himself during the sinking; this was based on a number of eyewitness testimonies of a shooting/suicide by an officer during the launching of the last lifeboat. It is possible that Murdoch was the officer.
In general, to append is to join or add on to the end of something. For example, an appendix is a section appended (added to the end) of a document. In computer programming, append is the name of a procedure for concatenating (linked) lists or arrays in some high-level programming languages.
appendage. n. 1. an ancillary or secondary part attached to a main part; adjunct. 2. (Zoology) zoology any organ that projects from the trunk of animals such as arthropods. 3. (Botany) botany any subsidiary part of a plant, such as a branch or leaf.. Something added or attached to an entity of greater importance or size; an adjunct. See Synonyms at attachment. 2. Biology A part or organ, such as an arm, leg, tail, or fin, that is joined to the axis or trunk of a body.