We use several names for the computational steps in an imperative language.
The word statement is often used with the special computer science meaning
'a elementary instruction in a source language'.
The word instruction is another possibility; We prefer to
devote this word the computational steps performed at the machine level.
We will use the word 'command' for the imperatives in a high level imperative programming
A procedure abstracts one or more actions to a procedure, which can be
activated as a single action.