diff --git a/collects/scribble/run.rkt b/collects/scribble/run.rkt
index 752004de..7d116842 100644
--- a/collects/scribble/run.rkt
+++ b/collects/scribble/run.rkt
@@ -79,8 +79,12 @@
     (current-redirect-main url)]
    [("--redirect") url "redirect external links to tag search via <url>"
     (current-redirect url)]
-   [("++xref-in") module-path proc-id "load format-specific cross-ref info by"
-    "calling <proc-id> as exported by <module-path>"
+   [("+m" "++main-xref-in") ("load format-speficic cross-ref info for"
+                             "all installed library collections")
+    (current-xref-input-modules
+     (cons (cons 'setup/xref 'load-collections-xref) (current-xref-input-modules)))]
+   [("++xref-in") module-path proc-id ("load format-specific cross-ref info by"
+                                       "calling <proc-id> as exported by <module-path>")
     (let ([mod (read-one module-path)]
           [id (read-one proc-id)])
       (unless (module-path? mod)
diff --git a/collects/scribblings/scribble/running.scrbl b/collects/scribblings/scribble/running.scrbl
index 4cb92533..74e94a1f 100644
--- a/collects/scribblings/scribble/running.scrbl
+++ b/collects/scribblings/scribble/running.scrbl
@@ -106,18 +106,22 @@ HTML-format information is usable for Latex (or PDF) or text rendering.
 
 A Racket installation includes HTML-format cross-reference information
 for all installed documentation. Each document's information is in a
-separate file, so that loading all relevant files would be tedious. The
-@DPFlag{xref-in} flag loads cross-reference information by calling a
-specified module's function; in particular, the
-@racketmodname[setup/xref] module provides
-@racket[load-collections-xref] to load cross-reference information for
-all installed documentation. Thus,
+separate file, so that loading all relevant files would be tedious.
+The @PFlag{m} or @DPFlag{main-xref-in} flag loads cross-reference
+information for all installed documentation, so
 
-@commandline{scribble ++xref-in setup/xref load-collections-xref mine.scrbl}
+@commandline{scribble +m mine.scrbl}
 
 renders @filepath{mine.scrbl} to @filepath{mine.html} with
 cross-reference links to the Racket installation's documentation.
 
+The @DPFlag{xref-in} flag loads cross-reference information by calling
+a specified module's function. The @racketmodname[setup/xref] module
+provides @racket[load-collections-xref] to load cross-reference
+information for all installed documentation, and @PFlag{m} or
+@DPFlag{main-xref-in} is just a shorthand for @exec{++xref-in
+setup/xref load-collections-xref}.
+
 The @DFlag{redirect-main} flag redirects links to the local
 installation's documentation to a given URL, such as
 @tt{http://docs.racket-lang.org/}. Beware that documentation links