Add a Local Parameters () node when you have a lot of parameter expressions that you have marked with a Read only flag and that contains expression in the target’s name space (using the targ prefix), for example. Then add them to a Local Parameters node under the Component node.

The Local Parameters node define parameters for Component nodes that are neither modifiable nor visible to Component Link nodes that refer to the component. The Parameters table defines parameters in addition to the parameters defined by the Parameters table in a Component. It is not allowed to redefine a parameter, and the COMSOL software shows an error if a parameter name already exist. In the rest of the Component, all parameters defined by Local Parameters nodes can be used as any parameter using the arg prefix.

In general, to add a Local Parameters node, right-click a Component, property, or feature node and add it from the context menu.

You can add local parameters to the table with a Name, Description, and Expression. For the expression, you can edit it in the Expression text field underneath the table, where you have access to syntax highlighting and the possibility to use multiple lines. See the COMSOL Multiphysics Reference Manual for more information about syntax highlighting. Use the buttons underneath the table for moving up and down, deleting, and loading and saving local parameters from and to a file.