SharePoint Shine

SP Workflow Manager     Contains members that enable you to centrally control the workflow templates and instances across a site collection.     Use the  SPWorkflowManager  class to centrally manage and control the running instances of workflows across a site collection.     Use the  SPWorkflowManager  object to:     Start, run, or cancel workflows.     Return all the workflows currently running on a specific item.     Perform other workflow administration operations.     The  SPWorkflowManager  class has no equivalent in the user interface. Through the Microsoft SharePoint Foundation user interface, users interact with the workflows running on items on an individual basis.       For   Understanding Purpose:      It is used to  creating the task to the user and controlling all the workflow on that particular...

Although in most of the UI and API they can be manipulated the same way, there are some significant differences between Lists and Libraries. The latter is a specialized type of the former.   Lists:   Can have attachments   Have major versions only   Do not have Check-in/Check-out features   Libraries:   Cannot have attachments (files are directly in the library)   Have both minor (draft) and major (published) versioning   Have Check-in/Check-Out   Publishing Libraries can use Page Layouts   Have Unique Document Ids out of the box   In code, you can always obtain an  SPList  from a  SPDocumentLibrary  but not the other way around.