A parameter expression is a Python expression that is in the expression field of a parameter. This can be a simple math equation or a complex expression using Python. Some common python expressions in parameters are in Python Tips.
For help with Python, refer to Python.
Tip: Long expressions in parameters can be edited in your text editor by clicking in the expression and pressing Ctrl-e. You can also select Edit Expression in the parameter's right-click menu.
( Nodes can be put into the legacy expression format, Tscript. For a list of all Tscript expressions, refer to Tscript Expressions or open the textport, put it in tscript mode by clicking the language option in the upper left, then type