Defines the location of the Office installation files. If the ODT is run in download mode, defines where to save the files. If not included, the ODT will look for installation files in the same folder as the tool, and then use the Office Content Delivery Network (CDN). If not included and the ODT is run in download mode, the Office installation files are downloaded to the same folder as the tool.
When you download Office to a folder that already contains that version of Office, the ODT will conserve your network bandwidth by downloading only the missing files. For example, if you use the ODT to download Office in English and German to a folder that already contains Office in English, only the German language pack will be downloaded.