Abstract: The present invention relates to a text editing system with a line end line feed function and an indentation function. In particular, a line end position Pg is stored in advance in a line end position storage unit 1, a line feed code in text data are detected by a line feed code detection unit 2 at the time of a text editing process after a character is inserted in or deleted from text data written in a subsequent file 4, shifts the position of the line feed code to the line end position Pg if the position of the line feed code does not match the line end position Pg, and the end of a line in a document is set to the line end position Pg. If there is a prescribed number of blank codes at the head of a line, at the time of a text editing process after insertion or deletion, a body of text can be edited in such a way that there are prescribed blanks that are always located at the head of the line by shifting blank codes.

Abstract: A data processing apparatus connected to at least one input apparatus and a display apparatus and including a window control unit and a data processing unit for executing data processing using one or more windows displayed on the display apparatus, and the window control unit includes; a first detecting unit for detecting the presence or absence of at least one window; a first window generating unit for providing a process selecting window which includes various menus to be selected by a user; and a first erasing unit for erasing the process selecting window; wherein when the first detecting unit detects no window on the display apparatus, the first window generating unit provides the process selecting window on the display apparatus, and when the first detecting unit detect any window, except for the process selecting window, the first erasing unit erases the process selecting window from the display apparatus.

Abstract: This invention provides a key-code outputting apparatus for a data processor of the type wherein two or more kinds of characters are assigned to each key of a keyboard connected to the data processor, and different kinds of characters can be inputted from one key by using a character input mode or by using conjointly a function key and a shift key. The key-code outputting apparatus includes a memory for managing a correspondence for each character input mode so that a key-code generated by a key address of the same character inputted from a keyboard of a different kind becomes the same as a key-code generated by the key address inputted from a keyboard having a key arrangement assumed by a data processing program.