The following characters are not permitted in a STRING argument because they are delimiters in the Adams/Solver (C++) command language: comma (,), semicolon (;), ampersand (&), and exclamation point (!). This is because the comma indicates that additional Adams/Solver (C++) arguments follow, the semicolon indicates that additional Adams/Solver (C++) statements follow on the same line, the ampersand indicates that the next line is a continuation of the statement on this line, and the exclamation point indicates that Adams/Solver (C++) is to stop reading the line.