This contains a set of 7 generic text attributes of varying data types (Boolean, Color, Date, List, Number, Set, String). the attribute names use a common prefix 'My'. e.g $MyString. These attributes are very useful for initial testing and incremental formalisation of projects. Pre-v6 documents with same-named attribute already defined as user attributes will still work as before but said attributes will now be accessed via the sandbox group of system attributes.