If you click Show Related for a target file object, the Show Related notebook displays any steps with first-level dependencies on that target file. You can view second-level dependencies by clicking Show Related for each object with a first-level dependency.
Steps Populated
When you drop a target file, steps that are populated by that target file might produce unexpected results.
Steps Used as Sources
When you drop a target file, steps that the target file uses as sources might produce unexpected results.