diff --git a/file-tools.rkt b/file-tools.rkt
index 4db2554..fbc9d47 100644
--- a/file-tools.rkt
+++ b/file-tools.rkt
@@ -86,7 +86,7 @@
 
 ;; todo: add extensions
 (define binary-extensions
-  '(gif jpg jpeg mp3 png zip))
+  '(gif jpg jpeg mp3 png zip pdf ico tar ai eps))
 
 (define/contract (has-binary-ext? x)
   (pathish? . -> . boolean?)
diff --git a/pollen-server-extras/poldash.css b/pollen-server-extras/poldash.css
index e66e378..5fa9411 100644
--- a/pollen-server-extras/poldash.css
+++ b/pollen-server-extras/poldash.css
@@ -11,12 +11,17 @@ body {
 table {
     border-collapse:collapse;
     width: 100%;
+    max-width: 900px;
 }
 
+tr > td:first-child {
+    width: 0%;
+}
 
-tr > td:first-child + td {
+tr > td:first-child {
     font-family: "Triplicate T4";
     background: #f6f6f6;
+    text-align: left; 
 }
 
 tr, tr + tr {
@@ -25,7 +30,8 @@ tr, tr + tr {
 
 td {
     font-size: 17px;
-    width: 20%;
+    line-height: 1.35;
+    text-align: center; 
 }
 
 a:hover {
@@ -36,7 +42,11 @@ a {
     text-decoration: none;
     color: #6a6;
     display: block;
-    padding: 1em;    
+    padding: 0.5em;   
+}
+
+.file-ext {
+    color: #bbb;
 }
 
 a:active {
@@ -46,6 +56,5 @@ a:active {
 tt {
     font-family: "AlixFB";
     font-size: 100%;
-    white-space: pre;
-    word-wrap: normal;
+    white-space: pre-wrap;
 }
\ No newline at end of file
diff --git a/server-routes.rkt b/server-routes.rkt
index 97cd68c..3dff708 100644
--- a/server-routes.rkt
+++ b/server-routes.rkt
@@ -19,8 +19,8 @@
     (head
      (meta ((charset "UTF-8")))
      (link ((rel "stylesheet") 
-                 (type "text/css") 
-                 (href ,(format "/~a" DASHBOARD_CSS)))))
+            (type "text/css") 
+            (href ,(format "/~a" DASHBOARD_CSS)))))
     ,body-xexpr))
 
 ;; to make dummy requests for debugging
@@ -109,8 +109,7 @@
     (define url-to-parent (string-replace url-to-parent-dashboard DASHBOARD_NAME ""))
     
     `(tr ,@(map make-link-cell (list 
-                                (cons url-to-parent-dashboard "←") 
-                                (cons url-to-parent url-to-parent) 
+                                (cons url-to-parent-dashboard url-to-parent) 
                                 empty-cell 
                                 (cons #f "(parent dir)") 
                                 empty-cell))))
@@ -125,24 +124,27 @@
     (define source (and (not (empty? possible-sources)) (->string (car possible-sources))))
     `(tr ,@(map make-link-cell 
                 (append (list                          
-                         ;; folder traversal cell
-                         (if (directory-exists? (build-path dir filename)) ; links subdir to its dashboard
-                             (cons (format "~a/~a" filename DASHBOARD_NAME) "→")
-                             empty-cell)
-                         (cons filename filename) ; main cell  
-                         (if source ; source cell (if needed)
-                             (cons (format "raw/~a" source) (format "~a source" (get-ext source)))
-                             empty-cell)
+                         (cond ;; main cell
+                           [(directory-exists? (build-path dir filename)) ; links subdir to its dashboard
+                            (cons (format "~a/~a" filename DASHBOARD_NAME) (format "~a/" filename))]
+                           [source (cons #f `(a ((href ,filename)) ,filename (span ((class "file-ext")) "." ,(get-ext source))))]
+                           [else   (cons filename filename)])
+                         
+                         (cond ; source cell (if needed)
+                           [(has-ext? filename POLLEN_TREE_EXT) (cons (format "raw/~a" filename) "ptree")]
+                           [source  (cons (format "raw/~a" source) "in")]
+                           [else empty-cell])
                          (cond ; raw cell (if needed)
-                           [(directory-exists? (build-path dir filename)) (cons #f "(subdir)")]
+                           [(directory-exists? (build-path dir filename)) (cons #f #f)]
                            [(has-binary-ext? filename) (cons #f "(binary)")]
-                           [else (cons (format "raw/~a" filename) "output")]))
-                        (if source
+                           [(has-ext? filename POLLEN_TREE_EXT) empty-cell]
+                           [else (cons (format "raw/~a" filename) "out")]))
+                        #|(if source
                             (list
                              (if (has-ext? source POLLEN_DECODER_EXT) ; xexpr cell for pollen decoder files
                                  (cons (format "xexpr/~a" source) "xexpr")
                                  empty-cell))
-                            (make-list 1 empty-cell))))))
+                            (make-list 1 empty-cell))|#))))
   
   (define (ineligible-path? x) (or (not (visible? x)) (member x RESERVED_PATHS)))  
   (define project-paths (filter-not ineligible-path? (directory-list dir)))
diff --git a/world.rkt b/world.rkt
index e70b8a6..b962e51 100644
--- a/world.rkt
+++ b/world.rkt
@@ -6,6 +6,12 @@
 
 (define POLLEN_PREPROC_EXT 'p)
 (define POLLEN_DECODER_EXT 'pd)
+(define POLLEN_TREE_EXT 'ptree)
+
+(define DEFAULT_POLLEN_TREE "main.ptree")
+(define POLLEN_TREE_PARENT_NAME 'parent)
+(define POLLEN_TREE_ROOT_NAME 'ptree-root)
+
 (define TEMPLATE_FILE_PREFIX "-")
 (define POLLEN_EXPRESSION_DELIMITER #\◊)
 (define TEMPLATE_FIELD_DELIMITER POLLEN_EXPRESSION_DELIMITER)
@@ -14,10 +20,6 @@
 (define FALLBACK_TEMPLATE_NAME "-temp-fallback-template.html")
 (define TEMPLATE_META_KEY "template")
 
-(define POLLEN_TREE_EXT 'ptree)
-(define DEFAULT_POLLEN_TREE "main.ptree")
-(define POLLEN_TREE_PARENT_NAME 'parent)
-(define POLLEN_TREE_ROOT_NAME 'ptree-root)
 
 (define MAIN_POLLEN_EXPORT 'main)
 ;(define META_POLLEN_TAG 'metas)
@@ -43,7 +45,7 @@
 
 (require "readability.rkt")
 (define RESERVED_PATHS
-  (map ->path (list POLLEN_COMMAND_FILE EXTRAS_DIR "poldash.css")))
+  (map ->path (list POLLEN_COMMAND_FILE EXTRAS_DIR "poldash.css" "compiled")))
 
 
 (define PROJECT_ROOT (current-directory))