Quote: goal crossing may be better than pointing; continuous action; bi-directional; double crossing; multiple selection; like gesturing

Quotation Skeleton

Perhaps the most important HCI implications of the … widget is a goal (1D bar) instead of … Qualitatively, crossing -- a continuous action occurring more … crossing can be bi-directional … it is also possible to cross a goal … commands. Indeed, … crossing is a step from pointing towards free … To select a group of objects, the user …   Google-1   Google-2

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