Strings are essentially text. Any and all text that is generally non-default takes up a string. Comments, map name, map description, display text, custom unit names, custom switch names, etc.
TrigEdit is completely text based and does require you to enter every trigger "off the top of your head". Here is an FAQ to help you:
http://www.staredit.net/index.php?showtopic=13854I recommend you download SCMDraft2 0.6.0 Prerelease #2:
http://scmdraft.stormcoast-fortress.net/?a...ile=Scmdraft6V2This file comes with Classic TrigEdit which emulates the Campaign Editor.