Project/Task/Task list

Kevin_Lin_(klin_(Delete)_2436386)

Dear all,I need customize Project/Task List/Task objects. Does anyone know Project/ProjectVol? What's the xxxVol for? I noticed that objects like Project/Task List/Channel have accociated Volume object. If I simply create new objects based on them without thinking about Vol, weird things happened. Where can I find information about associate volume stuff?Thanks in advance.