I think I will drop the address book part, as you suggested, People can be extended if there is need anyway :) Hmm, also, files attributes to handle events seems a really good idea! Basically, one attribute would be like datetimeStart (I don't know the conventions about attributes names, sorry :-) ) and there would be a warningDelay or something better.. I would create a dynamic BFS query to list all events based on their filetype (not on the 2 attributes I've just specified), sort all the events based on time of expiracy.. every N minutes, add new events as given by the live query and show notifications if need is.. What do you think? 2008/3/31, François Revol <revol@xxxxxxx>: > > > You might want to try using files for events as well, and use > > > indexed > > > attributes, but it might not scale very well... > > > > Using files with attributes would be nice, but is there a standard > > set > > of attributes for event files that all apps can comply with (and thus > > avoid different apps using different attributes for the same > > purpose)? > > > There are some existing apps, but I don't think they are widely used. > > Now I'm thinking an attr based cron implementation would be handy too > :) > > > François. > >