15. The handheld electronic apparatus as claimed in claim 11 , wherein the parsing procedure further comprises: activating a client application for displaying the content of the document; copying the content by the client application to the storage unit; and enabling a text parsing function for parsing the copied content to find out the text groups according to the preset pattern database.
16. The handheld electronic apparatus as claimed in claim 15 , wherein the parsing procedure further comprises: extracting the touch coordinates of the touch event when the touch event is detected.