or a value determined at compile time.
.
.TP
+.B @hash
+Set by
+.BR dump-runlisp-image (1)
+to the hash
+(a string of hexadecimal digits)
+identifying the versions of the Lisp code included
+\(en or to be included \(en
+in a custom image.
+This is constructed by hashing the result of evaluating the
+.B lisp-version
+expression in the system definition.
+.
+.TP
.B @image-dir
The directory in which
.B runlisp
or a value determined at compile time.
.
.TP
+.B @image-link
+The well-known name of the image;
+actually a symbolic link to the `real' image file,
+whose name includes a hash
+which identifies the versions of the Lisp code included in the image.
+.
+.TP
.B @image-new
Set by
.BR dump-runlisp-image (1)
if the command completes successfully.)
.
.TP
+.B @image-newlink
+Set by
+.BR dump-runlisp-image (1)
+to the name to use for the updated symbolic link to the image file.
+This is used internally,
+and is not expected to be useful in Lisp system definitions.
+.
+.TP
.B @image-out
Set by
.BR dump-runlisp-image (1)