diff --git a/direct/src/doc/howto.adjust b/direct/src/doc/howto.adjust
new file mode 100644
index 0000000000..8172c093a2
--- /dev/null
+++ b/direct/src/doc/howto.adjust
@@ -0,0 +1,71 @@
+                            HOWTO USE ADJUST()
+
+What is adjust?  
+
+BASIC:
+
+Its a simple function that allows you to quickly pop up a slider to adjust
+a value.  Example:
+
+myVal = 0.0
+def setMyVal(x):
+   global myVal
+   myVal = x
+   print myVal
+
+adjust(setMyVal)
+
+this will print out the current value of the slider
+
+ADVANCED:
+
+You can use keyword arguments to configure the slider during or after
+creation, or you can configure the slider interactively
+
+Useful keywords include:
+
+   min         # min value of the slider
+   max         # max value of the slider
+   resolution  # slider resolution
+   text        # slider label
+
+To set during creation call:
+
+adjust(setMyVal, min = -10.0, max = 1000.0, resolution = 1.0, text = 'Fancy')
+
+To set after creation:
+
+es = adjust()
+es['command'] = setMyVal
+es['min'] = -1000.0
+es['max'] = 10.0
+es['resolution'] = 1.0
+es['text'] = 'Fancy2'
+
+To configure interactively, right click (mouse button 3) on various parts
+of the slider to change settings.  Click on:
+
+   from label -> to set min
+   to label -> to set max
+   slider -> to set resolution
+   label -> to set slider label
+
+You can pack multiple sliders into a single panel:
+
+from Tkinter import *
+
+def func1(x):
+   print '1:', x
+
+def func2(x):
+   print '2:', x
+
+def func3(x):
+   print '3:', x
+
+tl = Toplevel()
+tl.title('Fancy-multi-adjust')
+
+adjust(func1, parent = tl, text = 'One')
+adjust(func2, parent = tl, text = 'Two')
+adjust(func3, parent = tl, text = 'Three')
diff --git a/direct/src/showbase/PythonUtil.py b/direct/src/showbase/PythonUtil.py
index 9eb339c90f..734de6eac0 100644
--- a/direct/src/showbase/PythonUtil.py
+++ b/direct/src/showbase/PythonUtil.py
@@ -266,9 +266,9 @@ def doc(obj):
        (isinstance(obj, types.FunctionType)):
         print obj.__doc__
 
-def adjust(parent = None, **kw):
+def adjust(command = None, parent = None, **kw):
     """
-    adjust(parent = None, **kw)
+    adjust(command = None, parent = None, **kw)
     Popup and entry scale to adjust a parameter
     
     Accepts any EntryScale keyword argument.  Typical arguments include:
@@ -297,6 +297,9 @@ def adjust(parent = None, **kw):
     if not parent:
         parent = Toplevel()
         parent.title('Parameter Adjust')
+    # Set command if specified
+    if command:
+        kw['command'] = command
     es = apply(EntryScale.EntryScale, (parent,), kw)
     es.pack(expand = 1, fill = X)
     es.parent = parent