We have created and tested Tahuti, a dual-view sketch recognition environment for class diagrams in UML The system is based on a multi-layer recognition frame work which recognizes multi-stroke objects by their ge ometrical properties allowing users the freedom to draw naturally as they would on paper rather than requiring the user to draw the objects in a pre-defined manner Users can draw and edit while viewing either their orig inal strokes or the interpreted version of their strokes engendering user-autonomy in sketching. The experi ments showed that users preferred Tahuti to a pain program and to Rational Rose" because it combined the ease of drawing found in a paint program with th ease of editing available in a UML editor.
