diff --git a/collects/scribble/doc.txt b/collects/scribble/doc.txt
index 6f397d2f..4861b29f 100644
--- a/collects/scribble/doc.txt
+++ b/collects/scribble/doc.txt
@@ -701,8 +701,6 @@ resulting reader in several ways.
                                 #'cmd)])
            (syntax/loc stx (mk-cmd rest ...)))]))
 
-* #:start-inside? -- used internally by the above `-inside' variants.
-
 > (use-at-readtable [keyword-args])
 
 Installs the Scribble readtable as the default.  Useful for REPL
diff --git a/collects/scribblings/scribble/reader.scrbl b/collects/scribblings/scribble/reader.scrbl
index 31293ff1..76e59155 100644
--- a/collects/scribblings/scribble/reader.scrbl
+++ b/collects/scribblings/scribble/reader.scrbl
@@ -891,14 +891,16 @@ Useful for implementing languages that are textual by default (see
 @filepath{docreader.ss} for example).
 }
 
-@defproc[(make-at-readtable [#:readtable readtable readtable? (current-readtable)]
-                            [#:command-char command-char character? #\@]
-                            [#:start-inside? start-inside? any/c #f]
-                            [#:datum-readtable datum-readtable 
-                                               (or/c readtable? boolean? 
-                                                     (readtable? . -> . readtable?)) 
-                                               #t]
-                            [#:syntax-post-processor syntax-post-proc (syntax? . -> . syntax?) values])
+@defproc[(make-at-readtable
+          [#:readtable readtable readtable? (current-readtable)]
+          [#:command-char command-char character? #\@]
+          [#:datum-readtable datum-readtable
+                             (or/c readtable? boolean?
+                                              (readtable? . -> . readtable?))
+                             #t]
+          [#:syntax-post-processor syntax-post-proc
+                                   (syntax? . -> . syntax?)
+                                   values])
           readtable?]{
 
 Constructs an @"@"-readtable.  The keyword arguments can customize the
@@ -934,9 +936,6 @@ resulting reader in several ways:
           [_else (error "@ forms must have a body")])))
   ]}
 
-@item{@scheme[start-inside?] --- if true, creates a readtable for
-use starting in text mode, instead of S-expression mode.}
-
 ]}
 
 @defproc[(use-at-readtable ...) void?]{