[1.0.X] A whole lotta documentation fixes, backported from r10303 on trunk.

I got my commit message cut off the first try, but luckily I get to still thank Kevin Kubasik for rolling all these fixes up into a single easy patch.

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.0.X@10306 bcc190cf-cafb-0310-a4f2-bffc1f526a37

docs/ref/forms/fields.txt

@@ -174,6 +174,16 @@ validation if a particular field's value is not given. ``initial`` values are
     >>> f.errors
     {'url': [u'This field is required.'], 'name': [u'This field is required.']}
 
+Instead of a constant, you can also pass any callable::
+
+    >>> import datetime
+    >>> class DateForm(forms.Form):
+    ...     day = forms.DateField(initial=datetime.date.today)
+    >>> print DateForm()
+    <tr><th>Day:</th><td><input type="text" name="day" value="12/23/2008" /><td></tr>
+
+The callable will be evaluated only when the unbound form is displayed, not when it is defined.
+
 ``widget``
 ~~~~~~~~~~