The following phrases in the Introduction of the CRM, section Terminology, seem to be very shorthand:
subproperty:
"Some object-oriented languages, such as C++, have no equivalent to the specialization of properties".
shortcut:
"The CRM allows shortcuts as cases of less detailed knowledge, while preserving in its schema the relationship to the full information."
New phrasing:
subproperty:
"Some object-oriented programming languages, such as C++, do not contain constructs that allow for the expression of the specialization of properties as sub-properties"
shortcut:
"The CRM declares shortcuts explicitly as single properties in order to allow the user to describe cases in which he has less detailed knowledge than the full data path would need to be described. For each shortcut, the CRM contains in its schema the properties of the full data path explaining the shortcut."
The proposal accepted by vote, 30/3/2010