A plus sign after category indicates that the item is an MIT Scheme extension. The form of template is interpreted depending on category . Variable Template consists of the variable's name. Special Form Template starts with the syntactic keyword of the special form, followed by a description of the special form's syntax. The description is written using the following conventions.
Parentheses indicate themselves.
This sequence of expressions is commonly referred to as the body of the special form. Procedure Template starts with the name of the variable to which the procedure is bound, followed by a description of the procedure's arguments. The names of the procedure's arguments are italicized in the printed manual, and uppercase in the Info file. When an argument names a Scheme data type, it indicates that the argument must be that type of data object.