I don't think it is any or much less a sentence.
This is more like the compass for finding your way out of a geometry book. A mathematical compass (like this one) is used to draw perfect circles. For Donne, it was the perfect metaphor for the long-distance relationship he imagined with his wife. Line 26: The compass is introduced emphasizing two crucial features.
Answer:
In simple words, A summary refers to the brief reinterpretation of a prolonged written paragraph comprising the much more important aspects of the writer. Summary significantly improves both ones reading as well as writing skill sets. In short , you need to read a paragraph closely, find key ideas as well as interpret those ideas. Then you have to note down certain ideas quickly within the next few statements or a section.
