# Difference between revisions of "Release notes for WeBWorK 2.16"

## New Features

• Essay grader features
• MathJax 3
• Should we advertise MathQuill here, even though it was in 2.15?
• ADD_JS_FILE and ADD_CSS_FILE
• Improved hardcopy of PGML problems
• TikZ images in problems.
• New macro parserGraphTool.pl for interactive graphing problems

• Revised "WeBWorK errors" page code + error.log records
• LTI Improvements
• Fix applets in gateway quizzes

• Many third pardy javascript libraries (jquery, jquery-ui, mathjax, codemirror, etc.) are no longer packaged with WeBWorK. These libraries are now installed via npm:
1. Install npm from your package manager (Ubuntu: apt install npm CentOS/RHEL: yum install npm).
2. Use npm to install third party javascript:
  > cd /opt/webwork/webwork2/htdocs
> npm install

• WW 2.16 requires MathJax v3. Previous versions of WW required MathJax v2 that was installed at /opt/webwork/MathJax. WW 2.16 installs MathJax via npm, so if you are upgrading an existing WW installation you may safely delete /opt/webwork/MathJax.
• The following perl packages will need to be installed
• There have been some tweaks to localOverrides.conf.dist. If you have not done any customization to localOverrides.conf then you should consider replacing it with a new copy of localOverrides.conf.dist. If you have made customizations in localOverrides.conf, you should consider synchronizing them with the latest version of localOverrides.conf.dist.
• The math4 theme has changed. If you use a custom theme, you may need to update your theme files to address these changes.
• WeBWorK is currently not compatible with recent versions of the SQL::Abstract package, so avoid upgrading past version 1.8. WW is known to work with versions up to 1.87.
• If you want to allow the use of the new PGtikz.pl macro, you will need to modify /etc/ImageMagick-6/policy.xml and change the line near the end of the file from

<policy domain="coder" rights="none" pattern="PDF" /> to <policy domain="coder" rights="read" pattern="PDF" />

## Call for Translators

Some text has changed in the WeBWorK interface, so there are new entries that need to be translated into other languages.