mi1456[11] is the string number being used for inputting the characters. mi1456[12] is the counter of the loop, character along the row. mi1456[13] is number of characters in the row so far. mi1456[14] is pixels down from the start row for drawing. mi1456[15] is the colour code of the text to start. 0123 45678 90 123 4567890123 456 7 89012345 67890 12 345 6789012345 678 9012345678901234567890123 Note the extra . at the end, it appears that the string must not end with a space else it will not be entered correctly. 45678901 23456789012345678901 In operation, Softboard1456.class provides 115 possible entry points. At the moment of start up there is one entry point available. 1: is for start up. After start up, at any time either 1 entry point is available or 113 entry points are available, depending upon whether the 1456 applet landscape Softboard1456.class has been instructed, using the software interrupt mechanism, to use 1 entry point or to use 113 entry points. When there is one entry point, which is the default situation at start up, or after a 14? software interrupt. 41: is for the mouse being pressed. When there are 113 entry points, achieved after a 13? software interrupt. The 13? could be in the 1: routine or the 41: routine as desired. Once the entry points are split in this way the 41: entry point is not available unless a 14? software interrupt is used. All of the 113 entry points are is response to the mouse button being pressed. The position of the mouse pointer on the screen is used to decide which of the 113 entry points is used. 70: is when y is less than 350. When y is greater than or equal to 350, one entry point from amongst entry points of 100: to 212: are used, depending where on the screen that the mouse button is pressed. The 100: entry point is given by a 25 pixel by 25 pixel filled square area whose top left point is at (0,350). To its right, with top left at (25,350) is an identically sized area gives 101: as the entry point. This continues to give 28 keys from 100: to 127: inclusive. The next 25 pixels of depth down gives 28 keys from 128: to 155: inclusive. The next 25 pixels of depth down gives 28 keys from 156: to 183: inclusive. The next 25 pixels of depth down gives 28 keys from 184: to 211: inclusive. The filled square active areas are on a regular grid, not staggered as is a conventional computer keyboard. Please know that a 23? software interrupt will turn on the softboard toolbar, which aligns with these selected regions. A 24? software interrupt will replace the colour toolbar and anything drawn on it with a white background. Please know that the softboard toolbar and the splitting of the entry points are independent of each other. It may well be that typical usage will be to use both together, yet the 1456 programmer may, if he or she so chooses, split the entry points and not use the softboard toolbar, perhaps writing a text character within each area. Also, the softboard toolbar is simply filled squares drawn on the display screen by the 1456 applet landscape. An identical display could be produced by drawing filled squares using 1456 object code. A filled square is drawn as being a filled rectangle with all four sides of equal length. There is no command specifically for a filled square. The 1456 programmer may, if he or she so chooses, produce his or her own active areas on the screen using eutodraw graphics commands and by using the values of the coordinates of the mouse button press with condition tests and conditional jump instructions just using entry points 1: and 41: if so desired. Another possibility is to use 11? at start up and to use the split entry points and also have other active areas identified using 1456 object code starting at the 70: entry label. Regardless of whether one entry point or entry points are being used, the position coordinates of the mouse at a mouse press are placed in integers 5 and 6, x and y respectively. The shift key being down at the mouse press causes a 1 to be placed in integer 7. The shift key being up at the mouse press causes a 0 to be placed in integer 7. The control key being down at the mouse press causes a 1 to be placed in integer 8. The control key being up at the mouse press causes a 0 to be placed in integer 8. The alt key being down at the mouse press causes a 1 to be placed in integer 9. The alt key being up at the mouse press causes a 0 to be placed in integer 9. There are various features provided in the software interrupt service routine. The command 1? will, for this particular 1456 applet landscape, place the string "The 1456 engine in action." into ms1456[19]. 13? will split the entry points. 14? will unsplit the entry points. 23? will turn on the softboard toolbar. 24? will turn off the softboard toolbar. The lettering that is drawn by eutodraw commands may have its size and style changed as follows. 1120? SansSerif PLAIN 12 point 1122? SansSerif ITALIC 12 point 1180? SansSerif PLAIN 18 point 1182? SansSerif ITALIC 18 point 1240? SansSerif PLAIN 24 point 1242? SansSerif ITALIC 24 point 1360? SansSerif PLAIN 36 point 1362? SansSerif ITALIC 36 point 1480? SansSerif PLAIN 48 point 1482? SansSerif ITALIC 48 point 1600? SansSerif PLAIN 60 point 1602? SansSerif ITALIC 60 point 1720? SansSerif PLAIN 72 point 1722? SansSerif ITALIC 72 point 3120? Monospaced PLAIN 12 point 3180? Monospaced PLAIN 18 point Interrupt service routines from 10100? to 10211? can be used to override the basic key grid with a light grey square, or to draw keys on an individual basis without displaying the softboard toolbar. Interrupt service routines from 11100? to 11211? can be used to override the basic key grid with a yellow square, or to draw keys on an individual basis without displaying the softboard toolbar. Interrupt service routines from 12100? to 12211? can be used to override the basic key grid with a white square, or to draw keys on an individual basis without displaying the softboard toolbar.