04683468 is referenced by 32 patents and cites 7 patents.

A method for editing sub-objects in an interactive draw graphic application which allows the operator to apply the edit action to the sub-object without affecting the rest of the object. Vertices of the object that are defined by the adjacent common end points of the sub-object are assigned attributes that either permit or prevent the end points from being separated during the sub-object editing process. If the end points are permitted to separate, actual separation is determined by the operator during the sub-object selection action and is based upon whether the point of selection is in the center third of the sub-object or the end third of the sub-object adjacent the vertex to be separated.

Title
Method for manipulation of graphic sub-objects in an interactive draw graphic system
Application Number
6/710762
Publication Number
4683468
Application Date
March 11, 1985
Publication Date
July 28, 1987
Inventor
John S Wang
Austin
TX, US
Carol S Himelstein
Austin
TX, US
Agent
James H Barksdale
Richard E Cummins
Assignee
International Business Machines
NY, US
IPC
G09G 1/16
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