Affirmation, negation and imperative

1. Affirmation
         a) Without specific non-manual marking
         b) Affirmative headnod
         c) Affirmative signs
2. Negation
         a) Headshake
         b) Headshake and negative sign
                   b.1 Sentence negation
                   b.2 Signs incorporating negation
3. Imperative
         a) Basic form
         b) Alternative forms for command expression

This movement is a non-manual marker that may last throughout the sentence or only during a part of it. For example, when the theme is mentioned, this movement only affects the rest of the sentence.

    "I think in a short time it's going to start raining hard."
    "The magazine you lent me I found very interesting."