caption: the letters of a business letter
exif: {"Image DocumentName": "Basic Parts of a Business Letter", "Image ImageDescription": "The salutation is the opening phrase of a letter that expresses a polite greeting, an expression of good will, or other sign of recognition used to address the recipient. In the absence of attention and subject lines, the salutation is placed two lines below the inside address.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}