CFuncMoveLinear

is a code class which is inherited by some moving brush entities.

Classnames:
 * - Can be told to move an arbitrary distance in a set direction.
 * - GoldSrc names for . No reason to use it.
 * - This entity can create moving water, though this water will be because  water requires it to always know what's surrounding it to render reflections and refractions. Only two  are known to render correctly across all systems. These are   and  . )