MCE has been labeled many terms—including Signed English, Manually-Coded English, Sign Supported Speech, and Sign Supported English, none of which specify the degree to which the user is attempting to sign specific English vocabulary or correct grammar. MCE differs from American Sign Language which has a very different grammar (including word order) than English. Deaf sign languages make use of spatial relationships, facial expression, and body positioning, while the degree to which a MCE-user incorporates these features depends on their proficiency in doing so. However, in an invented system such as Signing Exact English (SEE), the use of manual features is described in the first and subsequent issues of the SEE Dictionary and users must use facial expression, directionality, body position, emphasis and so forth to score well on certification tests such as the EIPA and the ESSE.