該OLK文件擴展名被稱為是由微軟開發的Outlook通訊簿文件。它是用於地址簿的文件格式,其中包含聯繫信息的個人和機構。它存儲姓名,電話號碼,地址,標題,組織數據,和其他聯繫信息。它用於保存和加載接觸。 Outlook通訊簿是一個虛擬的地址簿,而不是一個物理地址簿,因為Outlook不會存儲在Outlook通訊簿作為一個文件,它是獨立於您的數據存儲。 OLK文件可以手動打開Outlook 2003中通過鍵入以下命令:的Outlook.exe /升olk_filename。 OLK文件也可以由Microsoft Word 2003打開,用於郵件合併等文件操作。在OLK格式的文件可以由Microsoft Outlook 2010和Microsoft Word 2010中的Microsoft Windows平台打開。 Outlook聯繫人更經常存儲為個人通訊簿(PAB)文件。
Outlook Express is an email and news client that is integrated with Internet Explorer versions 4.0 through 6.0. It is also bundled with a number of versions of Microsoft Windows, from Windows 98 to Windows Server 2003, and is available for Windows 3.x, Windows NT 3.51, Windows 95 and Mac OS 9. In Windows Vista, Outlook Express was outdated by Windows Mail, then again by Windows Live Mail as separate software in Windows 7. Microsoft Entourage, sold as part of Microsoft Office for Macintosh, has changed the Macintosh version. Outlook Express is a diverse application from Microsoft Office Outlook. The two programs do not share a common codebase, but do share a common architectural philosophy. The similar names lead many people to incorrectly conclusion that Outlook Express is a stripped-down version of Microsoft Office Outlook. Outlook Express utilizes the Windows Address Book to store contact information and incorporates tightly with it. On Windows XP, it also joins together with Windows Messenger.
Microsoft Word is a word processor program that is packed in the Microsoft Office Suite. It is developed by Microsoft Corporation, generating a .doc file extension when the file is saved. A document file format (.doc) is a text or binary file format for saving documents on a storage media, mainly for computer use, like typing text, charts, tables, page formatting, graphs, images and other documents whose content is created and edited. Contents of these documents are printable in any sizes and are capable to open in other devices provided that its operating system is able to read DOC files. This .doc file extension has become extensive de facto standard for office documents, but it is an owned format and is not always totally supported by other word processors. A variety of programs that is able to open this type of file, and different operating systems and have installed programs that can open a 1ST file are: Microsoft Word, Microsoft Notepad, Microsoft Word, IBM Lotus WordPro, and Corel WordPerfect.