In Arbortext IsoDraw 7.2, the term “halo” replaced the term “shadow.” When you record a macro in release 7.2 or later, the keyword halo is recorded in place of the deprecated keyword shadow. When parsing macros created in release 7.1 or earlier, Arbortext IsoDraw handles shadow the same as halo. No warning message appears when a macro executes a command that contains the deprecated keyword shadow.