4.3 Constant

Table 4.1: Summary of constant attributes

Data type	Format	Description	Example
Numerical Value( $num$ )	integer, real number string	Double precision floating point numbers is used internally	`20, 0.55, 1.5*e10`
Character string( $str$ )	"Character string"	Character string enclosed in double quotes	`"abc" "日本語"`
Date ( $date$ )	0dyyyymmdd	Add "0d" before fixed length year month day	`0d20080923`
Time ( $time$ )	0tyyyymmddHHMMSS	Add "0t" before fixed length year, month, date,	`0t20080923121115`
		time, minute and second
	0tHHMMSS	add "0t" before fixed length time, minute and second	`0t121115`
		(current date stored internally)
Boolean ( $bool$ )	0b1, 0b0	Add "0b" before "1"(true) and "0"(false)	`0b1, 0b0`