when looking at page (particularly one from local disk) some links are highlighted as "visited" some are not. Most of the time, when I delete site's visits from the history, clear the cache - and do a forced reload of the page - the visit flags for that site are cleared (normal color again). Some links don't behave that way, as though they are flagged somewhere besides the history file. How do I get them to reset (without deleting my ~entire~ history file.)