/*! \class ValueNode_DynamicList
** \brief Animated List ValueNode
**
-** This ValueNode was originaly set up to have a list
+** This ValueNode was originally set up to have a list
** of ValueNodes and their associated "on" and "off" points.
** ie: Any time that was directly after an "on" point,
** the item would be "on", and any time that was directly
** after an "off" point would be "off". This is pretty intuitive.
-** However, it does have it's problems.
+** However, it does have its problems.
**
-** The problems arrise when we introduce the concept of a
+** The problems arise when we introduce the concept of a
** Keyframe. Keyframes can be manipulated via the Synfig
** Application Library. They allow the user to quickly
** and "automagickly" rearange an animation by moving
-** the associated keyframes. With they old way that the
+** the associated keyframes. With the old way that the
** "on" and "off" points were handled, this task became
** overly complicated.
**
-** What is required is a "symetric" system of describing
+** What is required is a "symmetric" system of describing
** "on" and "off" points. Instead of the point representing
** the state of the item after that point in time, we have
** the point represent <i>only that frame</i>. The state