diff --git a/info.rkt b/info.rkt
index a955bdb..8ad1df8 100644
--- a/info.rkt
+++ b/info.rkt
@@ -1,7 +1,7 @@
 #lang info
 (define collection 'multi)
 
-(define version "3.0")
+(define version "3.1")
 (define deps '(["base" #:version "6.3"]
                ["txexpr" #:version "0.2"]
                ["sugar" #:version "0.2"]
diff --git a/pollen/info.rkt b/pollen/info.rkt
index 677e5fa..cbfbc95 100644
--- a/pollen/info.rkt
+++ b/pollen/info.rkt
@@ -4,6 +4,6 @@
 (define raco-commands '(("pollen" (submod pollen/private/command raco) "issue Pollen command" #f)))
 (define compile-omit-paths '("test" "tools" "server-extras" "scribblings/third-tutorial-files"))
 ;; it's redundant to test "pollen.scrbl" because it incorporates the other scribble sources by reference
-(define test-omit-paths '("test/data" "tools" "server-extras" "scribblings/third-tutorial-files" "scribblings"))
+(define test-omit-paths '("test/data" "tools" "server-extras" "scribblings/third-tutorial-files"))
 ;; don't put #"p" in this list because it's not a #lang
 (define module-suffixes '(#"pp" #"pm" #"pmd" #"ptree"))
diff --git a/pollen/private/constants.rkt b/pollen/private/constants.rkt
index 1a27457..ec1ef6b 100644
--- a/pollen/private/constants.rkt
+++ b/pollen/private/constants.rkt
@@ -18,4 +18,6 @@
 (define fallback-template-prefix "fallback")
 (define template-meta-key "template")
 (define old-cache-names '("pollen.cache" "pollen-cache"))
-(define splicing-tag '@)
\ No newline at end of file
+(define splicing-tag '@)
+(define here-path-key 'here-path)
+(define extension-escape-char #\_)
\ No newline at end of file
diff --git a/pollen/private/file-utils.rkt b/pollen/private/file-utils.rkt
index a7f11bf..9127f39 100644
--- a/pollen/private/file-utils.rkt
+++ b/pollen/private/file-utils.rkt
@@ -57,7 +57,7 @@
   (not (regexp-match #rx"^\\." (path->string path))))
 
 
-(define+provide (escape-last-ext x [escape-char (setup:extension-escape-char)])
+(define+provide (escape-last-ext x [escape-char pollen-extension-escape-char])
   ;((pathish?) (char?) . ->* . coerce/path?)
   ;; if x has a file extension, reattach it with the escape char
   (define current-ext (get-ext x))
@@ -76,7 +76,7 @@
 (define second cadr)
 (define third caddr)
 (define (last x) (car (reverse x)))
-(define+provide (unescape-ext x [escape-char (setup:extension-escape-char)])
+(define+provide (unescape-ext x [escape-char pollen-extension-escape-char])
   ;((coerce/string?) (char?) . ->* . coerce/path?)
   ;; if x has an escaped extension, unescape it.
   (define-values (base _ dir?) (split-path x))
diff --git a/pollen/private/reader-base.rkt b/pollen/private/reader-base.rkt
index 82e1010..65bf056 100644
--- a/pollen/private/reader-base.rkt
+++ b/pollen/private/reader-base.rkt
@@ -46,7 +46,7 @@
                   ;; an inline Pollen submodule doesn't have "pollen.rkt" or `here-path` 
                   [POLLEN-REQUIRE-AND-PROVIDES (require+provide-directory-require-files pollen-require-path)]
                   [HERE-PATH reader-here-path]
-                  [HERE-KEY (setup:here-path-key)]
+                  [HERE-KEY pollen-here-path-key]
                   [SOURCE-LINES source-stx]
                   [DOC pollen-main-export]
                   [META-MOD pollen-meta-export]
diff --git a/pollen/private/render-helper.rkt b/pollen/private/render-helper.rkt
index 68696f8..4811ab8 100644
--- a/pollen/private/render-helper.rkt
+++ b/pollen/private/render-helper.rkt
@@ -44,7 +44,7 @@
                   (define doc (cached-doc SOURCE-PATH-STRING))
                   (define metas (current-metas))
                   (define here (path->pagenode
-                                (or (select-from-metas (setup:here-path-key SOURCE-PATH-STRING) metas) 'unknown)))
+                                (or (select-from-metas pollen-here-path-key metas) 'unknown)))
                   (if (bytes? doc) ; if main export is binary, just pass it through
                       doc
                       ;; allows `require` in a template
diff --git a/pollen/private/ts.rktd b/pollen/private/ts.rktd
index 45384bf..2791f79 100644
--- a/pollen/private/ts.rktd
+++ b/pollen/private/ts.rktd
@@ -1 +1 @@
-1592325356
+1592782348
diff --git a/pollen/scribblings/command.scrbl b/pollen/scribblings/command.scrbl
index 06436b8..e956ae2 100644
--- a/pollen/scribblings/command.scrbl
+++ b/pollen/scribblings/command.scrbl
@@ -614,7 +614,7 @@ Second, the metas are collected into a hash table that is exported with the name
 '#hasheq((dog . "Roxy") (cat . "Chopper") (here-path . "unsaved-editor"))
 }
 
-The only key that's automatically defined in every meta table is @racket['#,(setup:here-path-key)], which is the absolute path to the source file. (In this case, because the file hasn't been saved, you'll see the @val{unsaved-editor} name instead.) 
+The only key that's automatically defined in every meta table is @racket['#,pollen-here-path-key], which is the absolute path to the source file. (In this case, because the file hasn't been saved, you'll see the @val{unsaved-editor} name instead.) 
 
 Still, you can override this too:
 
diff --git a/pollen/scribblings/core.scrbl b/pollen/scribblings/core.scrbl
index 7e53156..4beda12 100644
--- a/pollen/scribblings/core.scrbl
+++ b/pollen/scribblings/core.scrbl
@@ -16,8 +16,7 @@ These functions are automatically imported into every Pollen source file (meanin
 
 @section{Metas}
 
-The only key that's automatically defined in every meta table is @racket['#,(setup:here-path-key)], which holds the absolute path to the source file. For instance, you could retrieve this value with @racket[(select-from-metas '#,(setup:here-path-key) metas)]. You can use something other than @racket['#,(setup:here-path-key)] as the key by overriding @racket[setup:here-path-key].
-
+The only key that's automatically defined in every meta table is @racket['#,pollen-here-path-key], which holds the absolute path to the source file. For instance, you could retrieve this value with @racket[(select-from-metas '#,pollen-here-path-key metas)].
 For a full introduction to metas, see @secref["Inserting_metas"].
 
 
@@ -32,7 +31,7 @@ You can retrieve a meta value — even in the same document where you define it
 @section{Splicing}
 
 @defform[(\@ arg ...)]
-Splicing tag: signals that a list should be merged into its containing expression. You can use something other than @racket[\@] by overriding @racket[setup:splicing-tag].
+Splicing tag: signals that a list should be merged into its containing expression. The splicing tag is @racket[setup:splicing-tag].
 
 @examples[#:eval my-eval
 (module splicer pollen/markup
diff --git a/pollen/scribblings/formats.scrbl b/pollen/scribblings/formats.scrbl
index 032e275..a046577 100644
--- a/pollen/scribblings/formats.scrbl
+++ b/pollen/scribblings/formats.scrbl
@@ -46,7 +46,7 @@ By default, every Pollen source file exports two identifiers:
 Contains the output of the file. The type of output depends on the source format (about which, more below).}
 
 @defthing[metas hasheq?]{
-A table of key–value pairs with extra information that is extracted from the source. These @racket[metas] will always contain the key @racket['#,(setup:here-path-key)], which returns a string representation of the full path to the source file. Beyond that, the only @racket[metas] are the ones that are specified within the source file (see the source formats below for more detail on how to specify metas).}
+A table of key–value pairs with extra information that is extracted from the source. These @racket[metas] will always contain the key @racket['#,pollen-here-path-key], which returns a string representation of the full path to the source file. Beyond that, the only @racket[metas] are the ones that are specified within the source file (see the source formats below for more detail on how to specify metas).}
 
 As usual, you can use @racket[require], @racket[local-require], or @racket[dynamic-require] to retrieve these values. But within a Pollen project, the faster way is to use @racket[get-doc] and @racket[get-metas].
 
diff --git a/pollen/scribblings/setup.scrbl b/pollen/scribblings/setup.scrbl
index e9d74c0..e658b22 100644
--- a/pollen/scribblings/setup.scrbl
+++ b/pollen/scribblings/setup.scrbl
@@ -56,9 +56,6 @@ Determines the default HTTP port for the project server.}
 
 
 
-@defoverridable[extension-escape-char char?]{Character for escaping output-file extensions within source-file names.}
-
-
 @defoverridable[main-pagetree string?]{Pagetree that Pollen dashboard loads by default in each directory.}
 
 
@@ -144,8 +141,6 @@ Both the names and the values of environment variables are case-insensitive, so
 
  @history[#:added "2.0"]}
 
-@defoverridable[here-path-key 'symbol]{Key used to store the path of the source file in its metas table. No idea why you'd want to change this.}
-
 
 @section{Parameters}
 
diff --git a/pollen/scribblings/version-history.scrbl b/pollen/scribblings/version-history.scrbl
index d3845c5..74dcb41 100644
--- a/pollen/scribblings/version-history.scrbl
+++ b/pollen/scribblings/version-history.scrbl
@@ -24,6 +24,10 @@ Beyond keeping the commit history available, I make no promise to maintain the p
 
 @section{Changelog}
 
+@subsection{Version 3.1}
+
+Downgraded the following @racket[pollen/setup] values from configurable to fixed: @racket[here-path-key], @racket[extension-escape-char].
+
 @subsection{Version 3.0}
 
 Changed rendering model to share a namespace between sequential renders, improving speed.
diff --git a/pollen/setup.rkt b/pollen/setup.rkt
index 1d22623..c919918 100644
--- a/pollen/setup.rkt
+++ b/pollen/setup.rkt
@@ -109,8 +109,6 @@
 
 (define-settable publish-directory "publish")
 
-(define-settable extension-escape-char #\_)
-
 (define-settable compile-cache-active #t)
 (define-settable render-cache-active #t)
 (define-settable compile-cache-max-size (* 10 1024 1024)) ; = 10 megabytes
@@ -123,8 +121,6 @@
 
 (define-settable trim-whitespace? #t)
 
-(define-settable here-path-key 'here-path)
-
 (define-settable poly-targets '(html)) ; current target applied to multi-output source files
 (define+provide current-poly-target (make-parameter (car (poly-targets))))
 
diff --git a/pollen/test/data/escape-ext/pollen.rkt b/pollen/test/data/escape-ext/pollen.rkt
index 7d3d50f..3df8ae1 100644
--- a/pollen/test/data/escape-ext/pollen.rkt
+++ b/pollen/test/data/escape-ext/pollen.rkt
@@ -3,5 +3,4 @@
 
 (module setup racket/base
   (provide (all-defined-out))
-  (define compile-cache-active #f)
-  (define extension-escape-char #\$))
\ No newline at end of file
+  (define compile-cache-active #f))
\ No newline at end of file
diff --git a/pollen/test/data/escape-ext/test$html.pp b/pollen/test/data/escape-ext/test_html.pp
similarity index 100%
rename from pollen/test/data/escape-ext/test$html.pp
rename to pollen/test/data/escape-ext/test_html.pp
diff --git a/pollen/test/test-escape-ext.rkt b/pollen/test/test-escape-ext.rkt
index 9dbcdca..9d28d06 100644
--- a/pollen/test/test-escape-ext.rkt
+++ b/pollen/test/test-escape-ext.rkt
@@ -3,7 +3,7 @@
 
 ;; define-runtime-path only allowed at top level
 (define-runtime-path test-dir "data/escape-ext")
-(define-runtime-path test-file "data/escape-ext/test$html.pp")
+(define-runtime-path test-file "data/escape-ext/test_html.pp")
 (define-runtime-path result-file "data/escape-ext/test.html")
 
 ;; `find-exe` avoids reliance on $PATH of the host system