HP 3000 Manuals

Using the 900 Series HP 3000: Advanced Skills Module 7: Solutions Guide

Lesson 4 Using UDC Options 

Exercise 5-3:  RECURSION Option 

In order to allow UDC SO to call upon and execute UDC ST (without
changing the order of the UDCs in the file), you would have to use OPTION
RECURSION as follows:

     ST
     SHOWTIME
     ***
     SM
     SHOWME
     ***
     SO
     OPTION RECURSION
     SHOWOUT
     ST
     ***

********** End of Exercise 5-3 ********** 

Q 5-5                 To make the UDC not executable from within a
                      program, you need to add the NOPROGRAM option:

                           LF
                           OPTION NOPROGRAM
                           LISTFILE
                           ***

Q 5-6                    a.  SHOWTIME is displayed.  The LISTFILE command
                             is not displayed because it is preceded by
                             OPTION NOLIST.

                         b.  No MPE/iX commands are displayed because the
                             OPTION NOLIST is still in effect.

                         c.  No MPE/iX commands are displayed because the
                             OPTION NOLIST is still in effect.

Exercise 5-4:  UDC Options 

   1.  The SLS UDC should look like this:

            SLS
            SHOWTIME
            LISTFILE
            OPTION LIST
            SHOWME
            ***

   2.  The problem with the following UDC is that OPTION NOHELP can only
       appear directly after the header.

            LISTER
            OPTION NOLIST
            FILE OUT;DEV=LP
            PRINT MYFILE, OUT=*OUT
            OPTION LIST
            *OPTION NOHELP
            LISTFILE MYFILE,2

   3.  Default values for the options are marked with an asterisk (*):

            LIST             NOLIST*
            HELP*            NOHELP
            RECURSION        NORECURSION*
            PROGRAM*         NOPROGRAM

************ End of Exercise 5-4 ***************** 

MPE/iX 5.0 Documentation