These names derive from terms like Line Print Terminal, Local Print Terminal, or Line PrinTer. It provides printer spooling and network print server functionality using the Line Printer Daemon protocol. The 3800 was initially positioned as a line printer replacement with additional features. Unlike Digital, Centronics concentrated on the low-end line printer marketplace with their distinctive units. Data were transferred to the line printer as a card image as well. A helper application (cups-lpd) converts Line Printer Daemon protocol (LPD) requests to IPP. Other (mainframe) line printer manufacturers also had to make sure their printers understood those commands. TRSDOS/LS-DOS 6.3 can dump the video screen to the line printer by pressing . A line printer prints one entire line of text before advancing to another line. The IBM 1132 line printer was the normal printer for the IBM 1130 computer system. Only the CP/M console (screen and keyboard), line printer, and disk devices were available. JetDirect (AppSocket), Line Printer Daemon ("LPD"), and SMB protocols. The line printer employed a series of status codes, specifically "ready", "online", and "check".