It didn't but I added it with no apparent change, this is the directory
entry from the multitasking book:
*
USER IPGATE express 32M 64M BG
INCLUDE IBMDFLT
IPL CMS PARM AUTOCR
IUCV *IDENT RESANY GLOBAL REVOKE
IUCV ALLOW PRIORITY MSGLIMIT 2000
IUCV ANY PRIORITY MSGLIMIT 2000
OPTION COMSRV QUICKDSP APPLMON MAXCONN 1000
LINK TCPMAINT 592 592 RR
MDISK 191 3390 0114 003 SYSUSR MR RSERVER WSERVER
******************************
PROFILE IBMDFLT
SPOOL 000C 2540 READER *
SPOOL 000D 2540 PUNCH A
SPOOL 000E 1403 A
CONSOLE 009 3215 T
LINK MAINT 0190 0190 RR
LINK MAINT 019D 019D RR
LINK MAINT 019E 019E RR
LINK MAINT 0402 0402 RR
LINK MAINT 0401 0401 RR
LINK MAINT 0405 0405 RR
*