Hi several documents are available: For Windows: http://support.sas.com/documentation/cdl/en/hostwin/69955/HTML/default/viewer.htm#chsysoptfn1.htm System options in general - also concerning restricted options http://go.documentation.sas.com/?docsetId=lesysoptsref&docsetTarget=n1ag2fud7ue3aln1xiqqtev7ergg.htm&docsetVersion=9.4&locale=da#n1243vjtfty6pan1ramcaeho4jte Regards Rune
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