• Interface types
– highlight the main design and research
issues for each of the different
interfaces
• Consider which interface is best for a
given application or activity
1. Command-based
• Commands such as abbreviations (e.g. ls)
typed in at the prompt to which the
system responds (e.g. listing current files)
• Some are hard wired at keyboard, others
can be assigned to keys
• Efficient, precise, and fast
• Large overhead to learning set of
commands www.id-book.com 5 ©2011
Second Life co