The rough idea of what is being said
A machine translation that is used to get the essential information from a document. A gist is useful even if it contains serious errors in vocabulary, syntax, and grammar.
the choicest or most essential or most vital part of some idea or experience; "the gist of the prosecutor's argument"; "the heart and soul of the Republican Party"; "the nub of the story"
The gist of an article is the overall idea of it; what it is basically about and the point it makes.
Summary of the meaning and essential points of a communication