A field (for Tasks or Resources) that is user-definable. Entries can be made against: cost; date; duration; finish; flag; number; outline code; start; text. Custom fields can be simply renamed or can contain value lists. A calculated field can contain a formulaic expression and also display graphical indicators. Custom fields can be defined within the Customized Fields dialog box (Tools..Customize..Fields). Custom fields are project-specific and can be copied from project to project using the Organizer. See also Enterprise Fields.
'SOURCE; microsoft project