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Features of a user friendly program include;Relatively easy for user to start using the softwareAmount of effort & information required of the user to get the system to complete required tasks should be kept minimum.System should be self-contained so that the user is not forced into accessing manuals or dealing with things that should be kept out of the system.System should be able to adjust to different levels of expertise between users and as users grows in competence.User should be made to feel in control of what is going on.
Items that must be included in a user manual include;System requirementNavigation tipsInstallation procedureTroubleshooting tip
Types of springs used in vehicle suspension systems include;Leaf springsCoil springsRubberStabilizer barAir spring
Types of roughages are;Succulent roughagesDry roughages
Types of fold include;Simple symmetrical foldAsymmetrical foldOverfoldIsoclinal foldRecumbent foldNappe or overthrust foldAnticlinorium and synclinorium complex of folds