BackgroundColor b 1 g 1 r 1 Columns Identifier 97b2d1473df89e8103300132 MaximumWidth 3.000000e+01 MinimumWidth 1.300000e+01 OOPlainTextExportWidthKey 1 Title Width 1.300000e+01 Identifier 2037d1483df89e8103300132 MaximumWidth 1.000000e+06 MinimumWidth 1.300000e+01 OOPlainTextExportWidthKey 72 Title Topic Width 5.120000e+02 IsNoteExpanded NoteColumn 97b2d1473df89e8103300132 NoteHeight 1.000000e+02 Other Information SpellCheckingEnabled OutlineColumn 2037d1483df89e8103300132 Root Item Children Cols {\rtf1\mac\ansicpg10000\cocoartf102 {\fonttbl\f0\fswiss\fcharset77 Helvetica;} {\colortbl;\red255\green255\blue255;} \pard\tx560\tx1120\tx1680\tx2240\tx2800\tx3360\tx3920\tx4480\tx5040\tx5600\tx6160\tx6720\ql\qnatural \f0\fs24 \cf0 The system should always keep users informed about what is going on, through appropriate feedback within reasonable time. } {\rtf1\mac\ansicpg10000\cocoartf102 {\fonttbl\f0\fswiss\fcharset77 Helvetica;} {\colortbl;\red255\green255\blue255;\red0\green0\blue0;} \pard\tx560\tx1120\tx1680\tx2240\tx2800\tx3360\tx3920\tx4480\tx5040\tx5600\tx6160\tx6720 \f0\fs24 \cf2 Visibility of system status} Cols {\rtf1\mac\ansicpg10000\cocoartf102 {\fonttbl\f0\fswiss\fcharset77 Helvetica;} {\colortbl;\red255\green255\blue255;} \pard\tx560\tx1120\tx1680\tx2240\tx2800\tx3360\tx3920\tx4480\tx5040\tx5600\tx6160\tx6720\ql\qnatural \f0\fs24 \cf0 The system should speak the users' language, with words, phrases and concepts familiar to the user, rather than system-oriented terms. Follow real-world conventions, making information appear in a natural and logical order.} {\rtf1\mac\ansicpg10000\cocoartf102 {\fonttbl\f0\fswiss\fcharset77 Helvetica;} {\colortbl;\red255\green255\blue255;} \pard\tx560\tx1120\tx1680\tx2240\tx2800\tx3360\tx3920\tx4480\tx5040\tx5600\tx6160\tx6720\ql\qnatural \f0\fs24 \cf0 Match between system and the real world } Cols {\rtf1\mac\ansicpg10000\cocoartf102 {\fonttbl\f0\fswiss\fcharset77 Helvetica;} {\colortbl;\red255\green255\blue255;} \pard\tx560\tx1120\tx1680\tx2240\tx2800\tx3360\tx3920\tx4480\tx5040\tx5600\tx6160\tx6720\ql\qnatural \f0\fs24 \cf0 Users often choose system functions by mistake and will need a clearly marked "emergency exit" to leave the unwanted state without having to go through an extended dialogue. Support undo and redo. } {\rtf1\mac\ansicpg10000\cocoartf102 {\fonttbl\f0\fswiss\fcharset77 Helvetica;} {\colortbl;\red255\green255\blue255;} \pard\tx560\tx1120\tx1680\tx2240\tx2800\tx3360\tx3920\tx4480\tx5040\tx5600\tx6160\tx6720\ql\qnatural \f0\fs24 \cf0 User control and freedom } Cols {\rtf1\mac\ansicpg10000\cocoartf102 {\fonttbl\f0\fswiss\fcharset77 Helvetica;} {\colortbl;\red255\green255\blue255;} \pard\tx560\tx1120\tx1680\tx2240\tx2800\tx3360\tx3920\tx4480\tx5040\tx5600\tx6160\tx6720\ql\qnatural \f0\fs24 \cf0 Users should not have to wonder whether different words, situations, or actions mean the same thing. Follow platform conventions.} {\rtf1\mac\ansicpg10000\cocoartf102 {\fonttbl\f0\fswiss\fcharset77 Helvetica;} {\colortbl;\red255\green255\blue255;} \pard\tx560\tx1120\tx1680\tx2240\tx2800\tx3360\tx3920\tx4480\tx5040\tx5600\tx6160\tx6720\ql\qnatural \f0\fs24 \cf0 Consistency and standards } Cols {\rtf1\mac\ansicpg10000\cocoartf102 {\fonttbl\f0\fswiss\fcharset77 Helvetica;} {\colortbl;\red255\green255\blue255;} \pard\tx560\tx1120\tx1680\tx2240\tx2800\tx3360\tx3920\tx4480\tx5040\tx5600\tx6160\tx6720\ql\qnatural \f0\fs24 \cf0 Even better than good error messages is a careful design which prevents a problem from occurring in the first place. } {\rtf1\mac\ansicpg10000\cocoartf102 {\fonttbl\f0\fswiss\fcharset77 Helvetica;} {\colortbl;\red255\green255\blue255;} \pard\tx560\tx1120\tx1680\tx2240\tx2800\tx3360\tx3920\tx4480\tx5040\tx5600\tx6160\tx6720\ql\qnatural \f0\fs24 \cf0 Error prevention } Cols {\rtf1\mac\ansicpg10000\cocoartf102 {\fonttbl\f0\fswiss\fcharset77 Helvetica;} {\colortbl;\red255\green255\blue255;} \pard\tx560\tx1120\tx1680\tx2240\tx2800\tx3360\tx3920\tx4480\tx5040\tx5600\tx6160\tx6720\ql\qnatural \f0\fs24 \cf0 Make objects, actions, and options visible. The user should not have to remember information from one part of the dialogue to another. Instructions for use of the system should be visible or easily retrievable whenever appropriate. } {\rtf1\mac\ansicpg10000\cocoartf102 {\fonttbl\f0\fswiss\fcharset77 Helvetica;} {\colortbl;\red255\green255\blue255;} \pard\tx560\tx1120\tx1680\tx2240\tx2800\tx3360\tx3920\tx4480\tx5040\tx5600\tx6160\tx6720\ql\qnatural \f0\fs24 \cf0 Recognition rather than recall } Cols {\rtf1\mac\ansicpg10000\cocoartf102 {\fonttbl\f0\fswiss\fcharset77 Helvetica;} {\colortbl;\red255\green255\blue255;} \pard\tx560\tx1120\tx1680\tx2240\tx2800\tx3360\tx3920\tx4480\tx5040\tx5600\tx6160\tx6720\ql\qnatural \f0\fs24 \cf0 Accelerators -- unseen by the novice user -- may often speed up the interaction for the expert user such that the system can cater to both inexperienced and experienced users. Allow users to tailor frequent actions. } {\rtf1\mac\ansicpg10000\cocoartf102 {\fonttbl\f0\fswiss\fcharset77 Helvetica;} {\colortbl;\red255\green255\blue255;} \pard\tx560\tx1120\tx1680\tx2240\tx2800\tx3360\tx3920\tx4480\tx5040\tx5600\tx6160\tx6720\ql\qnatural \f0\fs24 \cf0 Flexibility and efficiency of use } Cols {\rtf1\mac\ansicpg10000\cocoartf102 {\fonttbl\f0\fswiss\fcharset77 Helvetica;} {\colortbl;\red255\green255\blue255;} \pard\tx560\tx1120\tx1680\tx2240\tx2800\tx3360\tx3920\tx4480\tx5040\tx5600\tx6160\tx6720\ql\qnatural \f0\fs24 \cf0 Dialogues should not contain information which is irrelevant or rarely needed. Every extra unit of information in a dialogue competes with the relevant units of information and diminishes their relative visibility. } {\rtf1\mac\ansicpg10000\cocoartf102 {\fonttbl\f0\fswiss\fcharset77 Helvetica;} {\colortbl;\red255\green255\blue255;} \pard\tx560\tx1120\tx1680\tx2240\tx2800\tx3360\tx3920\tx4480\tx5040\tx5600\tx6160\tx6720\ql\qnatural \f0\fs24 \cf0 Aesthetic and minimalist design } Cols {\rtf1\mac\ansicpg10000\cocoartf102 {\fonttbl\f0\fswiss\fcharset77 Helvetica;} {\colortbl;\red255\green255\blue255;} \pard\tx560\tx1120\tx1680\tx2240\tx2800\tx3360\tx3920\tx4480\tx5040\tx5600\tx6160\tx6720\ql\qnatural \f0\fs24 \cf0 Error messages should be expressed in plain language (no codes), precisely indicate the problem, and constructively suggest a solution. } {\rtf1\mac\ansicpg10000\cocoartf102 {\fonttbl\f0\fswiss\fcharset77 Helvetica;} {\colortbl;\red255\green255\blue255;} \pard\tx560\tx1120\tx1680\tx2240\tx2800\tx3360\tx3920\tx4480\tx5040\tx5600\tx6160\tx6720\ql\qnatural \f0\fs24 \cf0 Help users recognize, diagnose, and recover from errors } Cols {\rtf1\mac\ansicpg10000\cocoartf102 {\fonttbl\f0\fswiss\fcharset77 Helvetica;} {\colortbl;\red255\green255\blue255;} \pard\tx560\tx1120\tx1680\tx2240\tx2800\tx3360\tx3920\tx4480\tx5040\tx5600\tx6160\tx6720\ql\qnatural \f0\fs24 \cf0 Even though it is better if the system can be used without documentation, it may be necessary to provide help and documentation. Any such information should be easy to search, focused on the user's task, list concrete steps to be carried out, and not be too large. \ } {\rtf1\mac\ansicpg10000\cocoartf102 {\fonttbl\f0\fswiss\fcharset77 Helvetica;} {\colortbl;\red255\green255\blue255;} \pard\tx560\tx1120\tx1680\tx2240\tx2800\tx3360\tx3920\tx4480\tx5040\tx5600\tx6160\tx6720\ql\qnatural \f0\fs24 \cf0 Help and documentation } Cols *empty* *empty* Expanded Styles Heading type None TextColor b 0 g 0 r 0 TextFont name Helvetica size 1.200000e+01 Heading type None Heading type None Version 5