Display future date
-------------------

		    ^dtadd^ curdate amt { ^d^ays | ^y^ears }

displays the future date (in yymmdd format) amt from curdate.  curdate
is specified in yymmdd format, and amt is specified as either number of
years or number of days.

Example
-------

	. ^dtadd 910505 57 days^

	Future date is:  910701


Warning
-------
	
When specifying amt in years, the calculation is an approximation; code assumes
365.25 days per year.  For some applications, this may be incorrect.