Definition of causality for English Language Learners. : 1  the relationship between something that happens or exists and the thing that causes it. : 2  the idea that something can cause another thing to happen or exist.
up vote 3 down vote accepted. Copy Source (internal name is _CopySource) field contains the URL of the source document. SharePoint sets this out of the box when moving a file through the UI, though it is settable programmatically too. share | improve this answer. answered Apr 13 '12 at 6:42.
Source: Required. Specifies the location from which you want to copy a file or set of files. Source can consist of a drive letter and colon, a folder name, a file name, or a combination of these. Destination: Required. Specifies the location to which you want to copy a file or set of files.