General Syntax

Input strings can contain the following characters:

• letters a through z

• numbers 0 through 9

• period (.) and underscore (_)

If you use any other characters, add double-quotation marks around the characters. A single statement can be placed on its own line, and terminated with a semicolon. Multiple statements are placed within braces. A list of items must be separated by commas and enclosed in double-quotation marks.