[Orgmode] Testing presence of a property

Is there a way to search for headlines which does *not* have set a particular property? Reading the manual I have the impression property search has the fixed syntax name=value, so there is no simple way to search for headers where a property is not yet set (that is, it has no value). The only

Re: [Orgmode] Testing presence of a property

User spamfilteracco...@gmail.com wrote: Is there a way to search for headlines which does *not* have set a particular property? Reading the manual I have the impression property search has the fixed syntax name=value, so there is no simple way to search for headers where a property is not yet