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MathGroup Archive 1999

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Version 3 and Version 4 Packages

  • To: mathgroup at
  • Subject: [mg18959] Version 3 and Version 4 Packages
  • From: "David Park" <djmp at>
  • Date: Fri, 30 Jul 1999 01:33:48 -0400
  • Sender: owner-wri-mathgroup at


If one is working in Version 4 can one write a package which Version 3 users can also

In addition to not using Version 4 extensions, what other measures must be taken, and
what procedures followed?

I found that simply putting a Version 4 package.m into Version 3,  among other
things, causes an error because the Notebook InitializationCellLoading option of
Version 3 has been changed to InitializationCellEvaluation in Version 4.

There are also problems with the new subscript part index format in Version 4.
Version 3 will not parse it correctly.

If one is writing a package, should one convert all input cells to "InputForm"? Will
this eliminate cross version parsing problems?

David Park
djmp at

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