Re: And how do you show a space
"t was deemed cheaper and more efficient to employ data entry clerks who would type in the code on our behalf"
I don't know about your experience but in the days when I used coding sheets it was because data entry was via humongously expensive card punches and nobody was going to give a programmer one of those each. Although, being a university, when the data entry ops. had gone home we could use them in the evening.