System Control Language <language> (SCL) The {command language} for the {VME/B} {operating system} on the {ICL2900}. SCL was {block structured} and supported strings, lists of strings ("superstrings"), {integer}, {Boolean}, and {array} types. You could trigger a {block} whenever a condition on a variable value occured. It supported {macros} and default arguments. Commands were treated like procedure calls. ["VME/B SCL Syntax", Intl Computers Ltd. 1980]. (2003-01-08)