Cell expressions in the header.

Do you want to modify part name to be "Part Number" and Ser Number to be Job Number?

Yes

You can merge those cells horizontally and put this in a cell, and within your programs create assign statements that pull in data from an input type comment

= "Part Number: " + VARIABLE("V1")

= "Job Number: " + VARIABLE("V2")

C1         =COMMENT/INPUT,NO,FULL SCREEN=NO,
            Please Edit Comment Text!
C2         =COMMENT/INPUT,NO,FULL SCREEN=NO,
            Please Edit Comment Text!
            ASSIGN/V1=C1.INPUT
            ASSIGN/V2=C2.INPUT

I wanted to merge it, but I can't. Do you have an idea why?

Have to unmerge the one on the right first, as it's already merged by default

If you are having trouble with merging do this without merging. I only merged to have more space in case of long data strings.

="Part Number: " in first cell of top row

= VARIABLE("V1") in second cell of top row

= "Job Number: " in Serial Number cell

= VARIABLE("V2") in the cell to the right of Serial Number

Have to unmerge the one on the right first, as it's already merged by default

If you are having trouble with merging do this without merging. I only merged to have more space in case of long data strings.

="Part Number: " in first cell of top row

= VARIABLE("V1") in second cell of top row

= "Job Number: " in Serial Number cell

= VARIABLE("V2") in the cell to the right of Serial Number