Meaning Of Leadin and Leadout Level 2

The headings leadin and leadout refer to introductory, separation, and termination characters or sequences in addition to the term being described. Sometimes these leadin and leadout components are an integral part of the term being described and sometimes they are not, but are rather, additional components such as distinct syntactical punctuation.

An example of the former is frame naming whereby AEDOK uses the character( f ) to indicate that the name is a frame name and the underscore( _ ) to separate the self descriptive parts, but the entire sequence itself is actually the name, and in this particular case the indicated leadin and separation characters are not actually required for the underlaying system to accept the name as a frame name but are accepted because they are simply of the acceptable characters for that naming convention.

An example of the latter is in the func parameter ^{parm 1} of the todoitQ2 script whereby the leadin character( & ) is an AEDOK syntactical character which is not part of the func parameter name which is to follow it, and the underlaying system, in this case AEDOK, will not recognize said character as a part of the name because said character is not of the acceptable characters for that naming convention.

Understanding or keeking track of these distinctions are not necessary for the proper utilization of that which is being specified and described. We discuss them here only to clarify for the more astute, of what might otherwise seem peculiar, ambiguous or arbitrary as sometimes a leadout for one part could have been a leadin for the next.