| http://www.w3.org/ns/prov#value | - As previously mentioned, housing 10 may be in numerous forms, for example, FIG. 8 is an illustration of housing 10 structured specifically for carriage 14 and trackball 12, and one which is structured to rest upon a support surface such as a table or desk when utilized, and this unit may be used to replace a typical mouse used with a computer.
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