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--- a/roles/calibre-web/README.rst
+++ b/roles/calibre-web/README.rst
@@ -1,3 +1,14 @@
+.. |ss| raw:: html
+
+   <strike>
+
+.. |se| raw:: html
+
+   </strike>
+
+.. |nbsp| unicode:: 0xA0
+   :trim:
+
 ==================
 Calibre-Web README
 ==================
@@ -92,15 +103,27 @@ manually::
 Known Issues
 ------------
 
-* Trying to access an empty public bookshelf causes a system error.
+* |ss| Trying to access an empty public bookshelf causes a system error. |se| |nbsp|  Appears fixed as of 2018-09-12: `janeczku/calibre-web#620 <https://github.com/janeczku/calibre-web/issues/620>`_
 
-* As of August 2018, it's sometimes impossible to set the language of an
-  e-book: `#1040 <https://github.com/iiab/iiab/issues/1040>`_, `janeczku/calibre-web#593 <https://github.com/janeczku/calibre-web/issues/593>`_
+* |ss| As of August 2018, it's sometimes impossible to set the language of an
+  e-book: `#1040 <https://github.com/iiab/iiab/issues/1040>`_, `janeczku/calibre-web#593 <https://github.com/janeczku/calibre-web/issues/593>`_ |se| |nbsp|  Appears fixed as of 2018-09-12: `janeczku/calibre-web#620 <https://github.com/janeczku/calibre-web/issues/620>`_
 
-* As of August 2018, calibre-web doesn't yet include Calibre's e-book
+* |ss| As of August 2018, calibre-web doesn't yet include Calibre's e-book
   conversion functionality (e.g. Calibre 3.27.1 [released 2018-07-06] allows
   teachers to convert between PDF, EPUB, HTML, TXT etc — to permit reading on a
-  wider array client devices and client software).
+  wider array client devices and client software). |se| |nbsp|  This new calibre-web
+  feature (which requires Calibre's ebook-converter program) needs to be manually
+  configured in IIAB 6.6 as of 2018-09-12: `janeczku/calibre-web#624 <https://github.com/janeczku/calibre-web/issues/624>`_
+
+  Specifically, to enable e-book conversion, log in as Admin/changeme (etc) then
+  click http://box/books -> Admin -> Basic Configuration -> External binaries, then
+  change these 2 settings:
+
+  * Change radio button "No converter" to "Use calibre's ebook converter"
+  * In textfield "Path to convertertool" type in: ``/usr/bin/ebook-convert``
+  * Submit
+  * Verify that "ebook-convert" appears on calibre-web's "About" page at http://box/books/stats
+  * Test it by clicking any e-book -> Edit metadata -> Convert book format:
 
 * http://192.168.0.x:8083 does not work, as a result of `iptables <https://github.com/iiab/iiab/blob/master/roles/network/templates/gateway/iiab-gen-iptables#L93>`_,
   even when ``services_externally_visible: true``.  This is fixable, but perhaps