I have a model that results in a table being joined to a feature class, neither of which are initially present in the map document (they're both created in the model). So, in order to get the feature layer and table into the map while preserving the join, I'm using the "model parameter" option from the model builder context menu. The problem is that these parameters are then available for modification in the tool dialog, which is unnecessary in this situation and undesirable. Is there a way to hide these parameters or make them read only?