Portfolio - a big, flat, thin case for carrying loose papers or drawings or maps; typically leather-based; "he remembered her mainly because she was carrying a considerable portfolio" case - the enclosing frame about a doorway or window opening; "the casings experienced rotted absent and needed to get replaced" In https://case-help94434.ampblogs.com/pay-someone-to-write-my-case-study-for-dummies-72359447