> Notational Conventions
> The SCPI interface standardizes command syntax and style that simplifies the task of programming across a wide range of instrumentation. As with any programming language, the exact command keywords and command syntax must be used. Unrecognized commands or improper syntax will not function.

> Notational Conventions
> : | A colon links command keywords together to form commands. The colon is not an actual part of the keyword, but is a signal to the SCPI interface parser. A colon must precede a root keyword immediately following a semicolon (see Notational Examples).
> ; | A semicolon separates commands if multiple commands are placed on a single program line.
> [ ] | Square brackets enclose one or more optional keywords.
> { } | Braces enclose one or more keyword or command parameters that may be included zero or more times.
> | | A vertical bar indicates “or” and is used to separate alternative parameter options. Example: ON | OFF is the same as ON or OFF.
> < > | Angle brackets enclose parameter descriptions.
> ::= | Means “is defined as” For example: <a>::=<b><c> indicates that <b><c> can replace <a>.
> sp | Space, referred to as white space, must be used to separate keywords from their associated data parameters. It must not be used between keywords or inside keywords.
> xxx | Indicates a root command name
> # | Indicates an integer value selection from a range of values

> For further information about SCPI command syntax and style, refer to the Standard Commands for Programmable Instruments (SCPI) 1999.0 document.