hpcc-systems/HPCC-Platform — pull request #4501 by ghalliday (2013-06-14 13:13:12+00:00)
Title: HPCC-8312 Rationalise the use of property and attribute

Attribute refers to an option explicitly added by the user

Property refers to something that can be derived from an
expression including explicit attributes.

Signed-off-by: Gavin Halliday