I think the manual could be a bit clearer on one point of the use of :EXPORT_*: properties.
http://orgmode.org/manual/Export-settings.html#Export-settings ~~ When exporting only a subtree, each of the previous keywords3 can be overridden locally by special node properties. These begin with ‘EXPORT_’, followed by the name of the keyword they supplant. For example, ‘DATE’ and ‘OPTIONS’ keywords become, respectively, ‘EXPORT_DATE’ and ‘EXPORT_OPTIONS’ properties. ~~ And... ~~ [2] If you want to configure many options this way, you can use several #+OPTIONS lines. ~~ *If* you already know what you're doing, then you know that you can't have multiple properties of the same name in the same PROPERTIES drawer. If you are reading the manual because you don't already know what you're doing, then you might simply convert the default block of options (inserted by C-c C-e # default RET) into multiple lines of properties, and then get annoyed when many of them are ignored. Perhaps add this? ~~ ... become, respectively, ‘EXPORT_DATE’ and ‘EXPORT_OPTIONS’ properties. Note that multiple EXPORT_OPTIONS lines are not supported, because node properties must have unique identifiers. ~~ hjh
