2483 Microsoft Help Contents File Text (Structured) Microsoft Help Contents Files store topics for a corresponding help document, which has file extension .hlp. They are found within applications which use Microsoft Help. 216 The Canadian Centre for Architecture / The Canadian Centre for Architecture 24 Mar 2022 24 Mar 2022 fmt/1656 PUID cnt File extension 1990 Microsoft Help Contents File BOF Absolute from beginning of file, magic bytes: :Base{1-259}.(hlp/HLP) 1 Absolute from BOF 0 0 3A42617365{1-259}2E(484C50|686C70)