Will I Remember in Seven Years? A Meaningful Approach to Documentation

At least where I work, the receiving hospital no longer looks at EMS patient care reports, meaning that documentation has become only important for quality assurance/improvement, research, case reviews, billing, and the remote (but high-consequence) possibility of a future lawsuit. How can we document calls in such a way that we'll be able to trust our own run forms in court up to seven years later? How can we do this in a systematic, time-efficient manner? What the heck does CHART (or D-CHART, or SOAP, or whatever acronym) even mean? Who better to learn from than an English teacher/EMS provider?