7. The touch screen-based document editing method of claim 6 , wherein detecting editing commands includes applying the presented plurality of editing symbols corresponding to the editing commands to the electronic document.
6. A touch screen-based document editing method comprising: storing editing symbols used for editing an electronic document; presenting the electronic document, by a display, the display being implemented as a touch screen for inputting an editing symbol insertion commands; inputting an editing request for editing the electronic document and an editing execution command; managing presentation information of the electronic document, including spaces between text lines of the electronic document to increase a distance between each and every text line of the electronic document in an editing mode in response to the editing request, and presenting editing symbols within the spaces between the text lines of the electronic document in response to the editing symbol insertion commands; extracting the presented editing symbols and positions of the presented editing symbols in the electronic document according to the presentation information, in response to an editing execution command; retrieving the presented editing symbols from the editing symbol storage and detecting editing commands corresponding to the presented editing symbols; and executing the editing commands according to the presented editing symbols and the positions of the presented editing symbols, decreasing the distance between the text lines to be the same as that before entering the editing mode.