As Salamu alaykum. In L2 of Al Waraqat we are tought that Kalam has to consist of at least two words. What about commands like "Go!" or "Read!" are they not Kalam that carry meaning and are understood? Jazak Allahu Khairan for clarifying.

Ustadh AbdulAziz al-Haqqan

They are 2 words in Arabic grammar, the 2nd word is the subject which is hidden dhamir mustatir so the sentence is go you.