Appendix: Changes Since
Earlier Versions
This content of this document is exactly the same as the specification in
Appendix H of the
PostScript Language Reference Manual, Second Edition.
Changes Since Version 2.0
Detailed DSC comment descriptions have been left out of this specification.
When developing an application that will support EPS files, the DSC version
3.0 (see the
PostScript Document Structuring Conventions Specifications
available from the Adobe Systems Developers’ Association) should be used
with this specification.
The following conditionally required DSC comments were added to this
specification as of version 3.0:
%%Extensions:
%%LanguageLevel:
%%DocumentNeededResources:
%%IncludeResource:
%%Begin(End)Document:
Changes Relevant to Applications Producing EPS Files
To help avoid ambiguities, section 2, “Guidelines for Creating EPS Files,”
has been added. This new section has several guidelines for producing EPS
files. Following these guidelines will help ensure that an EPS file can be reli-
ably included in documents without causing any annoying side effects. Also,
these new rules allow applications to easily determine if an EPS file is com-
patible with version 3.0 of the EPS file format. The following is an overview
of the new guidelines:
•
%%Begin(End)Preview:
comments must bracket an EPSI preview.
• There is a list of illegal operators that must not be used in an EPS file.
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