diff --git a/scheme/nuit-engine.scm b/scheme/nuit-engine.scm
index a5f9d4f..eb8618e 100644
--- a/scheme/nuit-engine.scm
+++ b/scheme/nuit-engine.scm
@@ -132,7 +132,6 @@
   (current-history-entry-selector-maker history-entry-result))
 
 (define (update-current-result! new-value)
-  (debug-message "update-current-result! " new-value)
   (cond
    ((current-history-item)
     => (lambda (entry)
@@ -295,11 +294,27 @@
       (toggle-command/scheme-mode)
       (loop (wait-for-input) #f))
 
+     ((= ch key-f8)
+      (show-shell-screen)
+      (paint)
+      (loop (wait-for-input) #f))
+
      ;; C-x o --- toggle buffer focus
      ((and c-x-pressed? (= ch key-o))
       (toggle-buffer-focus)
       (loop (wait-for-input) #f))
 
+     ;; C-x p --- insert selection
+     ((and c-x-pressed? 
+	   (focus-on-command-buffer?)
+	   (current-history-item)
+	   (= ch 112))
+      (add-string-to-command-buffer
+       (post-message 
+	(history-entry-plugin (entry-data (current-history-item)))
+	(make-selection-message (active-command) (current-result))))
+      (loop (wait-for-input) #f))
+
      ((and c-x-pressed? (focus-on-result-buffer?))
       (let ((key-message
 	     (make-key-pressed-message
@@ -493,7 +508,6 @@
   (refresh-command-window))
 
 (define (paint)
-  (debug-message "paint")
   (paint-bar-1)
   (paint-command-frame-window)
   (paint-command-window-contents)
@@ -672,9 +686,11 @@
     (wrefresh win)))
 
 (define (paint-result-buffer paint-proc)
+  (debug-message "paint-result-buffer before")
   (paint-proc (app-window-curses-win result-window)
 	      result-buffer
-	      (focus-on-result-buffer?)))
+	      (focus-on-result-buffer?))
+  (debug-message "paint-result-buffer after"))
   
 ;;Cursor
 ;;move cursor to the corrct position
diff --git a/scheme/nuit-packages.scm b/scheme/nuit-packages.scm
index 67e71b2..191817f 100644
--- a/scheme/nuit-packages.scm
+++ b/scheme/nuit-packages.scm
@@ -106,8 +106,12 @@
 ;;; standard command plugin
 
 (define-structure standard-command-plugin
-    (export standard-command-plugin)
+    (export standard-command-plugin show-shell-screen)
   (open nuit-eval
+	let-opt
+	pps
+	ncurses
+	signals
 	plugin)
   (files std-command))
 
@@ -175,6 +179,7 @@
         srfi-1
         srfi-6
         display-conditions
+	signals
         
 	ncurses
         layout
diff --git a/scheme/std-command.scm b/scheme/std-command.scm
index fda621b..e186a6b 100644
--- a/scheme/std-command.scm
+++ b/scheme/std-command.scm
@@ -1,8 +1,36 @@
+;; ,open let-opt
+(define (wait-for-key . optionals)
+  (let-optionals optionals
+      ((tty-port (current-input-port)))
+    (let* ((old (tty-info tty-port))
+	   (copy (copy-tty-info old)))
+      (set-tty-info:local-flags 
+       copy
+       (bitwise-and (tty-info:local-flags copy)
+		    (bitwise-not ttyl/canonical)))
+      (set-tty-info:min copy 1)
+      (set-tty-info:time copy 0)
+      (set-tty-info/now tty-port copy)
+      (let ((c (read-char tty-port)))
+	(set-tty-info/now tty-port old)
+	c))))
+
 (define (standard-command-plugin-completer command args)
   #f)
 
+(define (show-shell-screen)
+  (def-prog-mode)
+  (endwin)
+  (display "Press any key to return to scsh-nuit...")
+  (wait-for-key))
+
 (define (standard-command-plugin-evaluater command args)
-  (run/strings (,command ,@args)))
+  (def-prog-mode)
+  (endwin)
+  (let ((status (run (,command ,@args))))
+    (display "Press any key to return to scsh-nuit...")
+    (wait-for-key)
+    status))
 
 (define standard-command-plugin
   (make-command-plugin #f
@@ -19,6 +47,12 @@
  		      (lambda (command args)
  			(directory-files))))
 
+(register-plugin!
+ (make-command-plugin "ps"
+		      no-completer
+		      (lambda (command args)
+			(pps))))
+
 (register-plugin!
  (make-command-plugin "pwd"
 		      no-completer