A variable is a programming object defined in the Object Dictionary for the application. Variables are used to store values temporarily during an application session. A variable is assigned a size and a data type in its definition, but until assigned a value during an application session, the variable is valueless (that is, $Null).
Quotation marks are used to delimit character strings. Normally, the quotation marks are optional; however, quotation marks are required when the string contains characters other than digits (0 to 9), letters (a to z and A to Z), the dollar sign ($), and the underscore (_) the string is identical to the name of an…
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By default, a physical line end (carriage return at the command prompt or in an application program) terminates the statement on that line. Upon encountering the line end, the software processes the current statement. However, statements that are too long to fit on one physical line can be continued onto any number of physical lines.…
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Comments are descriptive words or sentences, typically used as internal documentation in application programs. Comments are an essential part of application system documentation. In Zim, the percent sign (%) is used to signal the start of a comment. When the software encounters the comment indicator, it ignores all subsequent characters on the current physical line…
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