As shown in the examples provided in the previous section, and as confirmed by the use of palm_up in the Imperative-and-Declarative (IaD) construction described in SYNTAX 1.3.9, palm_up can occur with many different uses of the imperative.In this sense, it is not a pragmatic marker of command, but a grammatical marker of the imperative verb.
movimp seems to have a more restricted distribution because it is used only when the addressee must move to a different position to obey a given command. Neither movimp nor palm_up are obligatory in interrogative sentences, as non-manuals are sufficient to signal the interrogative force. For example, the following video contains two imperative sentences. The first one (‘wake up!’) contains no manual marker of imperative force while the second one (‘go to eat!’) contains movimp.
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ix2 wake_up. eat movimp
‘Wake up! Go to eat!’