@@ -15,10 +15,11 @@
                      racket/base
                      txexpr
                      sugar/coerce
                      pollen/tag
                      pollen/setup
+                     pollen/pagetree
                      pollen/core))
 
 @(define dust-eval (make-base-eval))
 @(dust-eval '(require "dust.rkt"))
 
@@ -35,14 +36,23 @@
 @defthing[default-authorname string? #:value "Joel Dueck"]
 
 Used as the default author name for @code{note}s, and (possibly in the future) for articles
 generally.
 
-@defthing[series-path/ path-string? #:value "series/"]
+@deftogether[(@defthing[articles-path path-string? #:value "articles"]
+              @defthing[series-path   path-string? #:value "series"])]
+
+The path of the folder that contains the Pollen source documents for Articles and Series
+respectively, relative to the project’s document root.
+
+@deftogether[(@defthing[articles-pagetree pagetree?]
+              @defthing[series-pagetree pagetree?])]
 
-The path of the folder that contains the Pollen documents defining Series, relative to the project’s
-document root.
+These are project-wide pagetrees: @racket[articles-pagetree] contains a pagenode for every Pollen
+document contained in @racket[articles-path], and @racket[series-pagetree] contains a pagenode for
+every Pollen document in @racket[series-path]. The pagenodes themselves point to the rendered
+@tt{.html} targets of the source documents.
 
 @section{Metas and @code{txexpr}s}
 
 @defproc[(attr-present? [name symbol?] [attrs (listof pair?)]) boolean?]