The timeline macro returns a list of tiddlers in reverse chronological order of modification (or some other date field), grouped by day.
DDth MMM YYYYtag[MyTag]modifiedThe tiddlers are selected by means of a filter expression, into which the subfilter and limit parameters are spliced as follows:
[!is[system]$subfilter$has[$dateField$]!sort[$dateField$]limit[$limit$]eachday[$dateField$]]