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Re: Call for all people presenting the Louis or Carl, Big trouble syndrom

  • To: mathgroup at
  • Subject: [mg26531] Re: Call for all people presenting the Louis or Carl, Big trouble syndrom
  • From: "Allan Hayes" <hay at>
  • Date: Wed, 3 Jan 2001 04:08:48 -0500 (EST)
  • References: <90kr7d$> <> <> <> <7dFZ5.93885$>
  • Sender: owner-wri-mathgroup at

I noticed the end of this thread rather late on coming back, so I may have
missed out some contributions. I hope that the following points are not

Intrusive Nulls:
I often find these in the output generated from input pasted from the group.
I find that this problem is corrected if the input is pasted into a Text
cell which is then converted to an Input cell

Parsing Problems

I earlier received this from Kaliph Hayes,Technical Support, Wolfram
Research, Inc. in reply to a query.

The following information is also available from the Technical
Support section of our website at the following URL:

   New features in the Mathematica 4.0 notebook interface make it
   necessary to place more strict parameters on BoxData arguments in the
   underlying Cell expression. Because of these new features, Mathematica
   3.0 is not guaranteed to correctly display or evaluate all compound
   expression inputs written in notebooks composed on Mathematica 4.0.

   You can choose one of the following two suggestions to workaround this

    1. Wrap the expression in parentheses
       This changes the underlying Cell expression to a form that is more
       compatible with the Mathematica 3.0 notebook interface.

          In[1]:=(  a = 1;
                    b = 3 + a;
                    c = 4 + b

          Out[1]= 8

    2. Use the command form for a compound expression, CompoundExpression
       If you choose CompoundExpression, use a comma to separate the

          In[1]:= CompoundExpression[
                    a = 1,
                    b = 3 + a,
                    c = 4 + b

          Out[1]= 8

Allan Hayes
Mathematica Training and Consulting
Leicester UK
hay at
Voice: +44 (0)116 271 4198
Fax: +44 (0)870 164 0565

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