when you create the entry, it seems to be about 256 characters in the field, but when it shows on the calendar, it will only show the first 20 characters of your entry. to get the full details, you'll have to click on the date so that it comes up in it's own windows. Also, it creates the 2nd window as a popup, (it's written that way, I can't change it

) so make sure that you don't have a popup blocker stopping it.