1. Mild emphasis / intensifier. 2.
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1. Mild emphasis / intensifier.
2. Suggests the idea of "not very far".
3. I guess it essentially means "only", but "Just a moment" is a set phrase and "only" cannot be directly substituted. However, in expanded versions you can say things like "I'll just/only be a moment" and "It'll just/only take a moment", where "just" and "only" have similar meanings.
4. A short time ago.