No; users of the style cannot override this. It may only be defined in the style.
||The date and/or time of the event, as formatted by DAY_DATE_FORMAT.
||The actual event from the journal.
||The value of DAY_TALK_LINKS. If you don't want commenting enabled on your journal, don't use this, or make DAY_TALK_LINKS empty.
||When the journal entry has a subject, then a DAY_SUBJECT is inserted into this property. That way you can do some specialized HTML only when there's a subject.
||A unique integer that represents this journal entry. You probably won't ever have to use this.
||A portion of a URL which identifies this event. This should be used when referring to memadd.bml, editjournal.bml or other similar actions which require an event to be identified in the URL. Do NOT use itemid=%%itemid%% for this purpose, or a similarly hardcoded scheme, use %%itemargs%%.
||The permalink of this event.
||If the user has specified either a current mood or their current music, then a DAY_CURRENTS gets inserted in here.