Houdini 20.5 Reference Windows
This window allows you to key parameters of a node. To access this window, click 
a node.
C
Clicking the 
icon creates a channel for the corresponding parameter.
Parameter
The name of the parameter.
K
This column sets a key for the corresponding parameter. You can only turn keys on and off for parameters that have channels.
The color editor is an expanded interface for picking colors.
Edit Node Gallery Entry window
This window allows you to edit entries in the node gallery.
Edit Parameter Interface window
Creates, imports, or edits parameters on a node.
Operator Type Properties window
The type properties window lets you edit the metadata and parameter interface of a digital asset node type.
The Package Browser window lets you list, create and manage Houdini packages.
Syntax highlighting color editor
You can choose a set of colors Houdini uses for syntax highlighting code such as VEX, Python, and USDA, or make your own syntax coloring scheme.
The Viewer Handle Browser window lets you list and manage python viewer handles loaded in Houdini.
Viewer Handle Code Generator window
Utility to generate Viewer Handle code.
The Viewer State Browser window lets you list and manage python viewer states loaded in Houdini.
Edits VOP struct data types.