1. Visibility of system status-always keep users informed about what is going
on, through providing appropriate feedback within reasonable time
2. Match between system and the real world-speak the users' language, using
words, phrases and concepts familiar to the user, rather than system oriented
terms
3. User control and freedom-provide ways of allowing users to easily escape
from places they unexpectedly find themselves, by using clearly marked
'emergency exits'
4. Consistency and standards-avoid making users wonder whether different
words, situations, or actions mean the same thing
1. Visibility of system status-always keep users informed about what is goingon, through providing appropriate feedback within reasonable time2. Match between system and the real world-speak the users' language, usingwords, phrases and concepts familiar to the user, rather than system orientedterms3. User control and freedom-provide ways of allowing users to easily escapefrom places they unexpectedly find themselves, by using clearly marked'emergency exits'4. Consistency and standards-avoid making users wonder whether differentwords, situations, or actions mean the same thing
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