analytic (comparative more analytic, superlative most analytic) Of, or relating to any form of analysis, or to analytics. Of, or relating to division into elements or principles. having the ability to analyse. (logic, of a proposition) that follows necessarily; tautologous.
The exclamation mark (British English) or exclamation point (American English) is a punctuation mark usually used after an interjection or exclamation to indicate strong feelings or high volume (shouting), and often marks the end of a sentence.
In general, don't use double punctuation marks, but go with the stronger punctuation. (Question marks and exclamation points are stronger than commas and periods. Think of it as a game of Rock, Paper, Scissors, if it helps.) When a tag line interrupts a sentence, it should be set off by commas.