We will start with the simplest of all expressions:
BETA accepts constants in the usual formats:
1, 1666, 0, 12
There is also a format (<base>X<number>) for integers in other bases. All the following constants represents 11:
2x1011, 3x102, 16xB, 0xb, 11
Predefined constants exist for MaxInt and MinInt in betaenv.
3.14159, 3E9 , 3.14E9
Predefined constants exist for MaxReal and MinReal in the math library.
true, false
'a', 'ABC'
a character is a text of length 1.
the text delimiter character can be represented by doubling: '''Hi''', is the text :'Hi'
following the C convention, many useful control characters can be introduced by using the backslash: '\t' for tabulator and '\n' for newline.
Libraries Tutorial  © 19942002 Mjølner Informatics 
[Modified: Friday January 4^{th} 2002 at 13:10]
