Tells the dspec system of the source location.
A pathname or a keyword.
Forms, including defining forms.
The result of
The macro at-location informs the dspec system that the source for definitions done during the execution of
are at the location
is usually a pathname, for definitions occuring in a file or editor buffer with that pathname.
Other locations are reserved for internal use. These are:
An editor buffer
Defined in an editor buffer with no pathname.
Defined without dspec information being recorded.
An aggregate defined by the existence of a part.
A subform of
LispWorks User Guide and Reference Manual - 21 Dec 2011