提綱挈領(lǐng)

- take a net by headrope or a coat by the collar -- to concentrate on the main points; a digest; a résumé; be concise and to the point; bring out the most essential points; bring up [forward] the chief points; bring up the essential points; full of pith and point; give one a general idea of subject; give the gist of a matter; give the main points; sum up the matter