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In a campus setting, VSPC offered users the ability to create and submit programs to an IBM (or compatible) mainframe without using punched cards, though the programs were still submitted as card images, and programs so submitted needed all the usual IBM [[Job Control Language]] (JCL) statements to access the mainframe batch submission and resource allocation processes. Output from a job submitted through VSPC could be routed to a printer, or back to the user's VSPC account, though in general the output would be too wide to easily view on a VSPC terminal.
Although IBM [[Selectric]] terminals were supported (with special typeballs for APL programming), most VSPC interaction was through half-duplex [[IBM 3270]] (and compatible) terminals. To use VSPC for APL programming, required a special terminal which implemented APL symbols in addition to the usual [[EBCDIC]] characters.
==References==
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