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Re: Single character in Italics. Ervin Doyle;

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  • Subject: [mg14674] Re: Single character in Italics. Ervin Doyle;
  • From: "Allan Hayes" <hay at>
  • Date: Sun, 8 Nov 1998 21:15:34 -0500
  • References: <720t57$>
  • Sender: owner-wri-mathgroup at

Ervin F. Doyle wrote in message <720t57$1uv at>...
>I recently purchased Mathematica 3.0.1. When I type a single character
>like "a" it comes out in italics. However, when I type two or more
>characters like "ad" or "abc" I get the characters in bold face. This
>italic single character appears when I'm setting up equations like f
>:= ... or g = ....Is there a reason for this? Do I have to use
>double characters  in my definitions etc. to avoid the italics when I
>don't want them.
>Thanks Ervin Doyle


No, you don't need to use double letters.

This can be dealt with at various levels: here are three suggestions

1) You can change italic letters manually by using Format>Face

2.1) To avoid the italics appearing in a particular notebook:

with your notebook selected;
    - choose Format>Edit Style Sheet > Import  Private Copy (this will
attach to your notebook a private copy of the style sheet that it is
currently using and will display it on screen)
    - in the displayed style sheet find the cell
FormatTypeStyles>Prototype for style "TraditionalForm"
    - select the cell and show its cell expression by using Format>Show
    - delete the line "SingleLetterItalics->True
    - change the cell expression back to the cell display, using
Format>ShowExpression (this toggles)

Existing automatic italicization in your notebook will be removed, and
it will not be used subsequently

Note: if you  use the style DisplayFormula for a cell, you will need to
treat the prototype for this in the style sheet in the same way

2.2) To avoid the italics appearing in all notebooks using a particular
shared style:

you will need to follow 2) but choose Edit Shared Style Sheet  in place
of Import Private Copy.
However, if you do this, then because the style sheet is not attached to
your notebook, the italics will appear if you open the notebook in
another Mathematica installation.


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