Figure 3.12.21-2 displays a portion of the error register. This illustration is used to demonstrate the application of Action Code 4, which is used to delete a section from the register. The illustration provides a layout of the fields for Sections 01, 02 and 03. Figure 3.12.21-2 displays an edited 4 (for Action Code 4) is entered to the left of Section 03 to instruct the ISRP operator that this is the section which is to be deleted from the error register. In this case, the Action Code 4 is entered to inform ISRP operators to delete Section 03 because the information contained in each of the fields in Section 03 are identical to the information contained in similar fields in Section 02.