The standard encodings were names in systemdict only, and the Encoding
category was empty, so `/StandardEncoding /Encoding findresource`
failed with undefinedresource. The PLRM (3rd ed.) has both as
instances of the Encoding category, the same arrays as the names.
Ghostscript's eps2write prolog takes StandardEncoding that way for a
font whose encoding is a Differences dictionary with no BaseEncoding,
so files with its Type 3 text stopped there.
JonRC
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