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Note the use of the 'Or Similar' checkbox. For example, entering 'Workbench' in the Details selection with this 'Or Similar' checkbox ticked, the search will find all attachments with the word Workbench anywhere in the Details. This selection can be any string of characters
Double click on a selected record and the 'Stored File Search Results' screen will open with this file selected. You may then drill into it from there