The syntax of the save format is simple. It's the output of Data::Dumper
on the %CalendarContents hash. The syntax of the %CalendarContents hash is as
follows:

%CalendarContents = (
	'YEAR' => {
			'MONTH_NUMBER(1-12)' => {
							'DAY(1-31)' => {
								'TIME' => {
										'summary' => 'SUMMARY',
										'fulltext' => 'Full text'
										# Other stuff...
									}
						}
		}
)

-	-	-	-	-

The same for the birthday saving:

%BirthdayContents = (
	'MONTH_NUMBER(1-12)' => {
					'DAY(1-31)' => {
								'NAME_OF_PERSON' => 1,
							}
				}
}
