keyword to defsystem is used to specify the members of a system. The argument given to
is a list of strings. A system member is either a file or another system, identified by a name. If a full pathname is given then the function
is used to identify the name of the member. Thus, for example, the name of a member expressed as
System members must have unique names, by a case-insensitive string comparison, so if a system has a member called
then it cannot have another member (a file or a system) named
The behavior of any member within a system can be constrained by supplying keyword arguments to the member itself. So, for example, specifying the
keyword ensures that only the source file for that member is ever loaded.
LispWorks User Guide and Reference Manual - 21 Dec 2011