The Jump-thru behavior allows the Platform behavior to stand on the object, and jump on to it from underneath. This differs from the Solid behavior, which the Platform behavior can stand on, but not jump on to from underneath. The image below illustrates the difference.
Note the Jump-thru behavior does not support slopes. Any slopes in your game should use the Solid behavior instead.
Jump-thru vs. Solid behaviors
Set whether the behavior is initially enabled or disabled. If disabled, the object no longer acts as if it is a Jump-thru, and the Platform behavior will always fall through it.
True if the behavior is currently enabled. This can be changed by the Enabled property or the Set enabled action.
Enable or disable the Jump-thru behavior for this object.