started ch8.2

String.md

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+# String
+String s are implemented as a collection bytes plus some methods o provide useful functionality when those bytes are interpreted as text.
+
+Strings can do everything that a UTF-8 character can
+
+These attached methods include creating, updating and reading.
+
+Strings are different to other collections, namely how indexing into a ``String`` is complicated by the differences between how people and computers interpret ``String`` data
+
+## What is a String?