User assistance through online help or tutorial fac ilities are among the major considerationsrnin des igning a user interface which in turn is the major factor for successful utilization ofrna software.rnMicro CDS/ISIS is an infomlation retrieval software package developed by UNESCO andrndistributed free of cost toÂ· non-profit making organization. In spite of its free availabiliry andrnlarge number of users , use of the software has been severely limited by a number of factors ,rn--------cchieramonp hemis-la-cIc-oradequate-user-assistalIce-and-insrructionLhrough-orrline-help-or---irntutorial facilities.rnThis thesis is an attempt to design and develop an online tutorial faciliry for MicrornCDS/ISIS software which is believed to contribute greatly to ease of use and learning thernsoftware.rnIn accomplishing this task, the software has been analyzed and described in terms of itsrnmajor functions. Survey of the available developmental approaches has also been conductedrnand the one appropriate for the current work has been adopted.rnThe tutorial consists of twelve lessons . It is developed using Turbo Vision which is anrnobject oriented application framework for windowing programs. Although all the lessonsrnhave been designed, due to time constraints only the first three lessons have beenrnprogrammed. However, the major design features proposed for the tutorial have beenrnincorporated in these three lessons. Among the features that the tutorial provides is use of menus to provide smooth access rornthe tutorial lessons , and provision of control button that enables the learner to control thernpace of the tutorial , linking of the concepts thereby enabling the learner to get morerninformation on related concepts, use of animated windows and highlights in drawingrnattention and moti vation of learner etc .