Release notes for PG 2.3.2

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This article has been retained as a historical document. It is not up-to-date and the formatting may be lacking. Use the information herein with caution.



The WeBWorKTeam is pleased to announce the release of PG 2.3.2. This version builds on PG 2.3.1, adding several bug fixes and low-impact feature enhancements. Changes include:

  • MathObjects: Use Perl reals rather than MathObjects reals for adaptive parameters in matrices.
  • MathObjects: Add a new operator // to be the same as / except its TeX form is a/b rather than \frac{a}{b}. This makes it possible get horizontal fractions in exponents, for example, where vertical fractions often don't look so good.
  • MathObjects: Fix a problem with the TeX representation used in previewing students' answers. (Specifically, a + b would be represented as a\quadb. Now it is represented as a \quad b.)
  • MathObjects: Fix a problem with the custom list checker.
  • MathObjects: Added a Vector2D context that has i and j defined as vectors in 2-space so that they can be used to generate vectors in 2D. This avoids students getting the "incorrect number of coordinates" error.
  • MathObjects: Modified the way the Parser-based versions of the traditional answer checkers get copies of their contexts. They now use a new method getCopy to obtain the copy either from the problem's context table or the default table (rather than only from the default). That way the instructor can use to customize the contexts used by the answer checkers.
  • MathObjects: Clear the error message in Context before it is used in an answer checker (prevents bleeding of one error into a later answer).


Refer to InstallationManualV2pt3. This document covers installation and upgrading of both WeBWorK and PG.


If you need help installing or using PG, visit the WeBWorK discussion group and post your question there. The developers and many experienced WeBWorK users monitor this forum.

Bug Reports & Feature Requests

Please submit bug reports and feature requests at

-- Main.SamHathaway - 15 Jan 2007
-- Main.SamHathaway - 05 May 2007 (updated for release)

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