The Select List is a selection of the points of in the model and is available in the Professional and Designer editions on n4ce. This enables n4ce to carry out operations on the selected points in isolation from the rest of the points in the model. So that the Select List can be used in this way, the current pick mode must be set to List. This is similar in principle to the CAD list where individual elements can be selected. When performing a list operation, you will be asked to confirm that you wish the operation to go ahead by a simple question dialog with only yes and no answers.