DEFINE

Allows a number to be associated with a character string, such that the character string can be used in input decks in place of the  number.

 FORMAT:

define/name/value

EXAMPLE:

define/nx/3/

define/ny/4

define/nz/5

define/bottom/0.1/

define/top/4.6

define/left/9.8

surface/s1/reflect/box/0.0,left,bottom/1.0,right,top

rz/xyz/nx/nz/0.0,left,bottom/1.0,right,top/1,1,1