Sandbox should contain jobflows, graphs, metadata, external connection and all related files. Files, especially graph or jobflow files, are identified by relative path from sandbox root. Thus you need two values to identify specific job file: sandbox and path in sandbox. Path to the Jobflow or ETL graph is often referred as "Job file".

Figure 15.3. Web GUI - section "Sandboxes" - context menu on sandbox

Although web GUI section sandboxes isn't file-manager, it offers some useful features for sandbox management.

Figure 15.4. Web GUI - section "Sandboxes" - context menu on folder