diff --git a/.gitignore b/.gitignore
index 8bcdd3c46..1c083eded 100644
--- a/.gitignore
+++ b/.gitignore
@@ -41,3 +41,5 @@ src/runtime/java/.libs/
 src/runtime/python/build/
 src/ui/android/libs/
 src/ui/android/obj/
+.cabal-sandbox
+cabal.sandbox.config
diff --git a/doc/gf-editor-modes.t2t b/doc/gf-editor-modes.t2t
index 64d998e06..d9368dd32 100644
--- a/doc/gf-editor-modes.t2t
+++ b/doc/gf-editor-modes.t2t
@@ -17,15 +17,16 @@ welcome!
 automatic indentation and lets you run the GF Shell in an emacs buffer.
 See installation instructions inside.
 
+==Atom==
+[language-gf https://atom.io/packages/language-gf], by John J. Camilleri
+
 ==Eclipse==
 
-[GF Eclipse Plugin http://www.grammaticalframework.org/eclipse/index.html]
+[GF Eclipse Plugin http://www.grammaticalframework.org/eclipse/index.html], by John J. Camilleri
 
 ==Gedit==
 
-[John J. Camilleri http://johnjcamilleri.com/]
-provided the following syntax highlighting mode for
-[Gedit http://www.gedit.org/] (the default text editor in Ubuntu).
+By John J. Camilleri
 
 Copy the file below to
 ``~/.local/share/gtksourceview-3.0/language-specs/gf.lang`` (under Ubuntu).
@@ -37,7 +38,7 @@ Some helpful notes/links:
 
 - The code is based heavily on the ``haskell.lang`` file which I found in
   ``/usr/share/gtksourceview-2.0/language-specs/haskell.lang``.
-- Ruslan Osmanov recommends 
+- Ruslan Osmanov recommends
   [registering your file extension as its own MIME type http://osmanov-dev-notes.blogspot.com/2011/04/how-to-add-new-highlight-mode-in-gedit.html]
   (see also [here https://help.ubuntu.com/community/AddingMimeTypes]),
   however on my system the ``.gf`` extension was already registered
@@ -51,8 +52,9 @@ Some helpful notes/links:
 
 ==Geany==
 
-[John J. Camilleri http://johnjcamilleri.com/] provided the following
-[custom filetype http://www.geany.org/manual/dev/index.html#custom-filetypes]
+By John J. Camilleri
+
+[Custom filetype http://www.geany.org/manual/dev/index.html#custom-filetypes]
 config files for syntax highlighting in [Geany http://www.geany.org/].
 
 Copy one of the files below to ``/usr/share/geany/filetypes.GF.conf``
diff --git a/src/compiler/GF/Command/Commands.hs b/src/compiler/GF/Command/Commands.hs
index 27b72b5c4..3ca2ab962 100644
--- a/src/compiler/GF/Command/Commands.hs
+++ b/src/compiler/GF/Command/Commands.hs
@@ -275,6 +275,7 @@ pgfCommands = Map.fromList [
        ("list","show all forms and variants, comma-separated on one line (cf. l -all)"),
        ("multi","linearize to all languages (default)"),
        ("table","show all forms labelled by parameters"),
+       ("tabtreebank","show the tree and its linearizations on a tab-separated line"),
        ("treebank","show the tree and tag linearizations with language names")
        ] ++ stringOpOptions,
      flags = [
@@ -791,6 +792,9 @@ pgfCommands = Map.fromList [
        _ | isOpt "treebank" opts ->
          (showCId (abstractName pgf) ++ ": " ++ showExpr [] t) :
          [showCId lang ++ ": " ++ s | lang <- optLangs pgf opts, s<-linear pgf opts lang t]
+       _ | isOpt "tabtreebank" opts ->
+         return $ concat $ intersperse "\t" $ (showExpr [] t) :
+                   [s | lang <- optLangs pgf opts, s <- linear pgf opts lang t]
        _ | isOpt "chunks" opts -> map snd $ linChunks pgf opts t   
        _ -> [s | lang <- optLangs pgf opts, s<-linear pgf opts lang t]
    linChunks pgf opts t =