15. An information processing apparatus having a gesture editing function, comprising: a display screen for displaying thereon a document; display input means for inputting a shape of a handwritten line drawing on said display screen; memory means for storing therein matching patterns for use in collating an input pattern of the handwritten line drawing inputted by said display input means and edit instructions for editing the document so as to have an association between each pair of matching pattern and edit instruction; and set content change means including a keyboard for changing as desired the association between each pair of the matching pattern and edit instruction in said memory means, said keyboard including a gesture setting change key for inputting an instruction for displaying associations between each pair of the matching pattern and edit instruction in a list on said display screen, a change operation key for selecting either a matching pattern or an edit instruction in the list, a change candidate key for selecting a specific candidate among a group of candidates for changing a matching pattern and an edit instruction, and an execution key for confirming a selection of the specific candidate, wherein an association between a first matching pattern and a first edit instruction is changed to an association between a second matching pattern and the first edit instruction when the first matching pattern is excluded from the group of candidates.
15. An information processing apparatus having a gesture editing function, comprising: a display screen for displaying thereon a document; display input means for inputting a shape of a handwritten line drawing on said display screen; memory means for storing therein matching patterns for use in collating an input pattern of the handwritten line drawing inputted by said display input means and edit instructions for editing the document so as to have an association between each pair of matching pattern and edit instruction; and set content change means including a keyboard for changing as desired the association between each pair of the matching pattern and edit instruction in said memory means, said keyboard including a gesture setting change key for inputting an instruction for displaying associations between each pair of the matching pattern and edit instruction in a list on said display screen, a change operation key for selecting either a matching pattern or an edit instruction in the list, a change candidate key for selecting a specific candidate among a group of candidates for changing a matching pattern and an edit instruction, and an execution key for confirming a selection of the specific candidate, wherein an association between a first matching pattern and a first edit instruction is changed to an association between a second matching pattern and the first edit instruction when the first matching pattern is excluded from the group of candidates. 16. The information processing apparatus having a gesture editing function as set forth in claim 15, wherein: said memory means includes a candidate table for matching pattern which stores therein 2-byte data in a form of a table, wherein the first byte of the data is a check data indicating whether or not a setting of an association between the matching pattern and the edit instruction has been completed, and the second byte of the data indicating a code corresponding to each matching pattern.