Last modified: 11/19/15
Problems using symbol characters from PostScript fonts in Macintosh OS X
The information in this document applies to:
MathType 6.x (Mac)
Equation Editor 3.0 (Mac)
Macintosh OS X
Microsoft Office 2011 (Mac)
Microsoft Office 2008 (Mac)
A bug in Apple's Macintosh OS X may
cause display and printing problems using PostScript versions
of the MathType symbolic (non-alphabetic) fonts. Other symbolic fonts (e.g.
PostScript versions of Symbol) may also be affected. The specific problem is
that certain characters are not drawn correctly.
By default, MathType uses TrueType versions of the MathType fonts. You will
not experience this problem if you use the TrueType fonts. Users who have
installed the PostScript fonts and disabled the TrueType versions may experience
The MathType 6.7 Installer places copies of MathType's TrueType fonts in your
Fonts folder. While most applications now prefer TrueType or OpenType
fonts, some users may still need to work with older PostScript Type 1 fonts.
While macOS still supports PostScript fonts to a certain extent, beginning with
version 10.5 there are serious issues with certain kinds of PostScript Type 1
fonts that prevent them from working with MathType. These issues are described
However, since MathType Mac 6.7 also supports macOS X 10.4.9, where PostScript
fonts can be used with MathType, we have provided PostScript versions of the
Euclid and MT Extra fonts. These fonts are in LWFN ("LaserWriter font") format,
meaning they consist of suitcases containing bitmap fonts plus a collection of
Type 1 outline fonts. If you wish to install MathType's PostScript fonts, you
can read about how to do that in the "About the PostScript Fonts" found under
the MathType application folder.
There are three known problems with PostScript fonts on OS
X that affect MathType:
Under macOS 10.5 and later, PostScript fonts cannot be used
with the deprecated PICT image format. Since Microsoft Office and Apple Pages,
Keynote, and Numbers all use PICT images internally to display MathType equations, this
means that you cannot use PostScript fonts with MathType in these applications.
OS X draws the wrong glyphs for many characters in
Euclid Symbol and MT Extra/Euclid Extra.
Under OS X 10.4.9, the issue affected eight characters in Euclid
Symbol and six in MT Extra/Euclid Extra (listed below). This problem will also
affect other symbolic PostScript fonts you may have and is due to a bug with how
OS X handles symbolic fonts. The bug affects screen and printed output
on OS X, but not EPS output. We have notified Apple about this issue, and any
concerns should be raised directly with Apple.
infinity (replaced by bullet)
proportional to (replaced by mu)
not equal to (replaced by pi)
identical to (replaced by integral)
weierstrass 'p' (replaced by radical)
circled plus (replaced by approximately equal
superset of (replaced by ellipsis)
logical or (replaced by slash)
Euclid Extra/MT Extra:
- integral loop (replaced by bullet)
- unknown glyph (replaced by space)
- 'fi' ligature (replaced by apple)
- dotless i (replaced by superscript 3)
- fraction slash (replaced by caron)
- double acute accent (replaced by degree)
Under 10.5 and later, the problem is much worse and most
characters are affected, making the MathType fonts effectively unusable.
If you assign a symbolic PostScript font (e.g., Euclid
Symbol) to the "Symbol" style in MathType's Define Styles dialog, some fence
templates (parentheses, braces) draw over-stretched on screen but will print at
the right size.
Demonstrating the problem without involving MathType or its fonts
This problem can also be reproduced without using MathType or its fonts,
thereby indicating that the underlying problem is not caused by MathType. If you
are an engineer or support person without MathType interested in reproducing the
problem, or you are just curious to see it outside of MathType, perform the
- Install a PostScript version of the Symbol font and disable or remove
the TrueType version (Adobe distributes a PostScript Symbol font).
- Launch Word.
- Go to Insert | Symbol and select the Symbol font. (If your version of
Word offers a choice of Symbol Browser or Advanced Symbol, choose the
latter.) In the corresponding character map, search for the
∞ (Infinity) symbol. You will likely not find
this symbol (due to the bug), so find it at character position 165,
Unicode character F0A5. Select it and click Insert.
- Notice in the Word document the 'Infinity'
symbol has been substituted by an incorrect
character, possibly the degree symbol or bullet.
- Print the Word document and see
that the same character(s) print incorrectly as well.
There is no real solution to this problem until the bug is fixed by Apple. A
workaround, when it affects MathType, is to
use the TrueType versions of the MathType fonts. These fonts are installed by
default, so if you have replaced these with the PostScript versions, just
replace the TrueType versions back again. An easier way to manage fonts is to use Font Book to disable the MathType-related PostScript
fonts when using MathType and enable the TrueType versions.
Getting This Problem Addressed by Apple
While we have reported this bug to Apple (bug #3574571),
we encourage all users to report it to them as well so
that Apple can appreciate the need to devote additional programming resources to
it. It is important that their customers continue to report their
own experience so that Apple understands how widespread this problem is. Most
often, reports from actual users have a greater impact on bugs getting addressed
than those submitted by independent software vendors such as us. Design Science
is committed to working with Apple to help resolve this problem.
You can report this problem and any other problems you have with the Macintosh
OS at http://www.apple.com/support/.
To report and track bugs via the Apple Developer Connection, visit
If you can contact their Technical Support Staff by telephone your report will
likely carry even more weight. You can contact Apple Technical Support at (800)