Wsrtjtyk

I am currently working on a simple X3D project, which is basically modeling the landing of a chopper.

I used TimeSensor to animate my chopper model, and an example of what I wrote is this:

<TimeSensor DEF='time1' cycleInterval='0.1' loop='true'></TimeSensor>



<OrientationInterpolator DEF='turn1' key='0 0.5 1' keyValue='1 0 0 0   1 0 0 1.046  1 0 0 2.093'></OrientationInterpolator>



<ROUTE fromNode='time1' fromField ='fraction_changed' toNode='turn1' toField='set_fraction'></ROUTE>

<ROUTE fromNode='turn1' fromField ='value_changed' toNode='rotorT' toField='set_rotation'></ROUTE>

I also got some auto-generated x3d stuff from my professor (he used Vivaty Studio), and interestingly I saw this:

<TimeSensor DEF='Wizard' cycleInterval='3.75000000' loop='true' startTime='-1'/>

<TimeSensor DEF='vizx_init' cycleInterval='.1' loop='true'/>



<ROUTE fromNode='vizx_init' fromField='cycleTime' toNode='Wizard' toField='startTime'/>

<ROUTE fromNode='vizx_init' fromField='cycleTime' toNode='vizx_init' toField='stopTime'/>

<ROUTE fromNode='Wizard' fromField='fraction_changed' toNode='Wizard_pos0' toField='set_fraction'/>

<ROUTE fromNode='Wizard_pos0' fromField='value_changed' toNode='dad_Group1' toField='set_translation'/>

It routes a timesensor to another timesensor, and also routes a timesensor to itself (vizx_init).

When I manually replace it with my style of having time sensor, my model still behaves the same way. Is there any point in having this overhead? What is the functionality of routing a timesensor to it self (line 5 in code block 2)?