So $OS references the name of the node itself, is there another like "$OS" that references to the name of the node directly before that node or anywhere in the chain?

you can use expressions, like for example even in stead of $OS you can use `opname(".")`
for the name of the node of first input to current node `opinput(".",0)`or to get full path `opinputpath(".",0)`
etc...

That is it, thank you so much!

Is it possible of referencing a name from previous node and add a string with it so it will change whatever node name upstream will be connected.


In this example the node transform will change to p03_transform