# Creating a Subscriber

Importing Data Using Publish and Subscribe: To use Publish and Subscribe to link data from an edition into your model, you must designate one of the allowable entities in your model as a Subscriber. To do so:

- Select all of the information that appears in the equation box or output column (in the case of the graphical function).

- Choose Subscribe To... from the Edit Menu. A dialog like the one in Figure 8-9 will then appear. The dialog operations are outlined there.

Figure 8-9 Selecting an Edition for Subscription Purposes

After clicking the Subscribe button, the data contained in the Edition to which you just subscribed will replace the previously selected data in the relevant equation box or output column of a graphical function. A thickly-outlined border will be drawn around the subscription locus (i.e., either the equation box, or the output column of a graphical function) if you try to click within the borders.

Once you have designated a subscription locus within a particular entity, it is no longer possible to edit any data contained within the locus. If the locus is within an Output column in a graphical function, you no longer will be able to type data into the column or sketch in curves using the X-Y grid.