Constants

Constants are logical, numeric, and string values.

Processing outcomes

• ok if it was done correctly
• nok if not done correctly
• null if no results returned
• data if logical, numeric or string data returned

Logical constants

Logical constants are used to represent falsity and truth:

• false
• true

Number 0 (zero) or void string '' are false.

Integer constants

Integer constants are: ..., -2, -1, 0, +1, +2,... (+ can be omitted).

Floating point constants

Floating point constants are, for example: -3.84, 3.14, +12.5 (2-digit approximation).

String constants

String constants are sequences of characters delimited by:

• ' (single quote)
• " (double quote)

or terminated by:

• end line (CR + LF)
• , (Command Separator)
• ] (compound end command).