diff --git a/shell/rgfw-loop.sml b/shell/rgfw-loop.sml
index 7686308..a82d94c 100644
--- a/shell/rgfw-loop.sml
+++ b/shell/rgfw-loop.sml
@@ -1,20 +1,51 @@
 structure RgfwLoop =
 struct
-  fun loop window =
+  fun loop (window, app) =
     if Rgfw.shouldCloseWindow window then
       Rgfw.closeWindow window
     else
-      let 
+      let
+        val _ = Gles3.clearColor (0.89, 0.89, 0.89, 1.0)
+        val _ = Gles3.clear ()
         val () = Rgfw.swapBuffers window
-      in 
-        loop window
+      in
+        loop (window, app)
       end
 
+  local
+    fun loop (io, acc, lastCharWasNewline) =
+      case TextIO.inputLine io of
+        SOME str =>
+          let
+            val endsWithNewline =
+              String.size str > 0
+              andalso String.sub (str, String.size str - 1) = #"\n"
+          in
+            loop (io, LineGap.append (str, acc), endsWithNewline)
+          end
+      | NONE =>
+          if lastCharWasNewline then
+            LineGap.goToStart acc
+          else
+            let val acc = LineGap.append ("\n", acc)
+            in LineGap.goToStart acc
+            end
+  in
+    fun ioToLineGap (io, acc) = loop (io, acc, false)
+  end
+
   fun main () =
     let
       val window = Rgfw.createWindow ("shf", 0, 0, 1920, 1080)
+      val () = Gles3.enableDepthTest ()
+
+      (* load file intol gap buffer and create initial app *)
+      val io = TextIO.openIn "temp.txt"
+      val lineGap = ioToLineGap (io, LineGap.empty)
+      val _ = TextIO.closeIn io
+      val app = AppType.init (lineGap, 1920, 1080, Time.now ())
     in
-      loop window
+      loop (window, app)
     end
 end
 
diff --git a/shf-rgfw b/shf-rgfw
index 1df92f1..19dce60 100755
Binary files a/shf-rgfw and b/shf-rgfw differ
diff --git a/shf-rgfw.mlb b/shf-rgfw.mlb
index bd2f422..8891cb6 100644
--- a/shf-rgfw.mlb
+++ b/shf-rgfw.mlb
@@ -1,11 +1,86 @@
 $(SML_LIB)/basis/basis.mlb
 
+(* LIBRARIES *)
+lib/brolib-sml/src/line_gap.sml
+lib/brolib-sml/src/gap_set.sml
+lib/cozette-sml/fonts-with-z-index/cozette-ascii.mlb
+
+(* FUNCTIONAL CORE *)
+fcore/bin-search.sml
+
+ann
+  "allowVectorExps true"
+in
+  fcore/persistent-vector.sml
+end
+fcore/search-list/dfa-gen.sml
+fcore/search-list/search-list.sml
+
+message-types/input-msg.sml
+message-types/draw-msg.sml
+message-types/mailbox-type.sml
+
+fcore/app-type.sml
+fcore/normal-mode/normal-mode-with.sml
+fcore/normal-mode/normal-search-mode-with.sml
+fcore/app-with.sml
+
+fcore/text-constants.sml
+ann
+  "allowVectorExps true"
+in
+  fcore/cursor-dfa/make-dfa-loop.sml
+  fcore/cursor-dfa/vi-word-dfa.sml
+  fcore/cursor-dfa/vi-caps-word-dfa.sml
+  fcore/cursor-dfa/vi-dlr-dfa.sml
+  fcore/cursor-dfa/vi-l-dfa.sml
+  fcore/cursor-dfa/vi-h-dfa.sml
+  fcore/rect.sml
+  fcore/pipe-cursor.sml
+end
+fcore/text-builder/text-builder-utils.sml
+fcore/text-builder/text-builder-with-cursor.sml
+fcore/text-builder/text-builder-with-highlight.sml
+fcore/text-builder/normal-mode-text-builder.sml
+fcore/text-builder/search-bar.sml
+
+fcore/cursor.sml
+fcore/text-scroll.sml
+
+fcore/normal-mode/normal-finish.sml
+fcore/normal-mode/normal-search-finish.sml
+fcore/move.sml
+
+fcore/normal-mode/normal-move.sml
+fcore/normal-mode/normal-yank.sml
+fcore/normal-mode/make-normal-delete.sml
+fcore/normal-mode/normal-delete.sml
+fcore/normal-mode/normal-yank-delete.sml
+fcore/normal-mode/normal-mode.sml
+fcore/normal-mode/normal-search-mode.sml
+
+fcore/app-update.sml
+
 (* IMPERATIVE SHELL *)
 $(SML_LIB)/basis/mlton.mlb
 ann
   "allowFFI true"
 in
-  ffi/rgfw-import.sml
   ffi/gles3-import.sml
+  ffi/rgfw-import.sml
 end
+
+ann
+  "allowVectorExps true"
+in
+  shell/make-mailbox.sml
+end
+
+shell/input-mailbox.sml
+shell/draw-mailbox.sml
+
+shell/exception-logger.sml
+shell/updater.sml
+shell/gl-shaders.sml
+shell/gl-draw.sml
 shell/rgfw-loop.sml