Note: For any technical document (paper/article, report, thesis dissertation), simple and formal language style must be followed.
One paragraph. (At most two, if really necessary.) Purpose and theme
of the paper. Central idea, breakthrough/achievement. Comment on its
utility and value.
Important: to attract a potential reader with the
exact expectation from the complete paper.
To avoid: flowery details, wrong/exaggerated claims, citations.
Advice: Write at the end after writing the
complete paper and still sharpen/revise twice.