1. Terminals, nonterminals, and metasymbols do not apply across all metalanguages . 2. The language in which the metaprogram is written is called the metalanguage . 3. The development of a programming language involves the use of a metalanguage . 4. The language which a metalanguage is used to describe is the object language. 5. In describing the transformation rules, we may introduce a metalanguage symbol \ vdash. 6. Computer languages are object languages of the metalanguage in which their specification is written. 7. The integer rule is a good example of natural and metalanguage used to describe syntax: 8. The structure of sentences and phrases in a metalanguage can be described by a metasyntax. 9. The paradigmatic example of a nested metalanguage comes from the Linnean taxonomic system in biology. 10. It is called that because that language is the object under discussion using the metalanguage .