a flag of unitary construction formed from a sheet of flexible , semi - rigid material having a central adhesive section on one side , flanked by two symmetrical adhesive free tabs which are printed so as to facilitate indexing or signaling of flagged material , may be reversibly attached to host material book , file card , file folder or the like proximate a free edge with one adhesive free tab protruding from the free edge host and one tab overlying a portion of the flagged host . the flag may be removed from the flagged host by grasping the adhesive free overlaying tab and peeling the flag outward relative to the free edge of the host without damage to the host , or the flag may be used to flag a section of text not proximate an edge of a host by pressing down the transparent adhesive bearing central section directly over or adjacent to the portion of text to be flagged .