This contains a set of 9 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. For pre-v6 documents which may have same-named/typed attributes already defined as user attributes, these will still work as before but said attributes will be accessed via the Sandbox group of system attributes.
See also—notes linking to here: