Hi,
I can read the Houdini networks and know

1. What information a nodes receives
   
2. What the nodes does
   
3. What output the nodes sends to another node downstream
   

But is there any way to look at only the parameters changed for a particular node and other parameters of a node be grayed out or moved to bottom.

Can I change any preference to make this default for me ?

Thank you,
Daniel

It's subtle - but changed parameter values are shown in a bolder font than the default.

You can also click the magnifying glass icon to search all "Parameters with non-default values"
This also enables you to see only those parameters.