Expansible document holder has anchoring tab which extends through tab slot to engage lateral flaps and lateral portions of lower flap in overlapping manner such that tab is hingedly connected to cut=out

摘要

A lower flap (16) has lateral portions (160) overlapped on the lateral flaps (17) in a document confining position. A tab slot (171) and an anchoring tab (161) are respectively formed in the overlying pairs of the lateral flaps and lateral portions. The tab extends through the tab slot to engage the lateral flaps and lateral portions and hingedly connects to the periphery of a rectangular cut-out (162).