Context
- Plone 4.3.19 (4320)
- CMF 2.2.10
- Zope 2.13.29
- Python 2.7.17 (default, Nov 1 2019, 09:28:08) [GCC 8.3.1 20190524]
- PIL 5.1.0 (Pillow)
and, in .../@@filter-controlpanel, "Custom tags" ("Add tag names here for tags which are not part of XHTML but which should be permitted."), iframe is listed.
Problem
The content of an iframe is not displayed (to be checked here: https://stage-latex-gte.univ-littoral.fr/#section-6).
Question
How to make iframes' contents displayed?
