The mainframe system I used in the 1970s had its printers with upper-case print trains. They did have one printer with an upper/lower train, so if you wanted to

The mainframe system I used in the 1970s had its printers with upper-case print trains. They did have one printer with an upper/lower train, so if you wanted to print a document out you submitted a batch job specifying that printer, and waited longer than usual for your output (because the print speed was lower). The computer centre management of the time considered document formatting to be an inferior use of their shiny equipment.