For example, for the file made of
* foo @@latex:x x x x x x x x x x@@ upon LaTeX export, the x's in are not in mathematical font. PS: with release_9.6-149-g55493, after I hit 'C-c C-e l o', on the file above, the following appears in the *Messages* buffer: Invalid face reference: help-key-binding [12 times] -- EOST (École et Observatoire des Sciences de la Terre) ITE (Institut Terre & Environnement) | alain.coch...@unistra.fr 5 rue René Descartes [bureau 110] | Phone: +33 (0)3 68 85 50 44 F-67084 Strasbourg Cedex, France | [ slot available for rent ]