

                                The Disk Doctor



         Sector Commands

              VIEW: Toggles between hex and character display.
         Character display translates any hex character in the range
         32 to 126 ($20 to $7E - from space to ~) into an ASCII
         character. In hex display mode, you can enter each nybble (4
         bits) of a byte but you must enter both (ie a full byte) for
         it to change. In character display, you enter a keyboard
         character into the entire byte. Control-V (^V) toggles
         between modes as well.


              WRITE SECTOR TO DISK: Writes currently displayed sector
         to disk at sector number described. After you write sector
         zero to disk, close the disk that's open. This updates the
         information about the disk properly. You don't need to do
         this with other sectors, only zero.


              Be especially careful about writing to the boot, FAT and
         directory sectors; you may not be able to recover from damage
         you cause to your disk easily if you make a mistake. remember
         that the undo buffer will contain the correct sector
         information if you copied it there first, before editing. You
         still may be able to recover it.


              PRINT SECTOR: Prints the current sector on the printer
         device. Make sure your printer is properly online and you
         have installed the printer properly using the desktop
         accessory. The paper automatically formfeeds after a sector
         has been printed. Other information may be printed by
         directing the output to the printer when the query window
         appears or by pressing and holding the Alternate key and
         pressing the Help key when displayed.


              The space bar pauses printing and the Return key stops
         it. This also works when displaying help files on the
         screen.


              COPY SECTOR TO BUFFER: Copies the currently displayed
         sector into the buffer. Only one sector at a time can be kept
         in the buffer. This does not alter the sector in any way and
         changes made to the sector do not affect the copy in the
         buffer. As a protection, you can copy the original contents
         into the buffer before you edit them and if you leave the
         sector and want to change it back later, you can retrieve the
         information and write it back to the sector. The copy buffer
         is, of course, wiped out when you exit the program. Control-C
         (^C) also copies the sector.





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                                The Disk Doctor


              RETRIEVE SECTOR FROM BUFFER: Recalls the sector in the
         buffer and loads it in over the information for the currently
         displayed sector. Using this command, you can transport
         sector information around the disk. To make the changes
         permanent, be sure to write the sector to disk after you have
         retrieved it. Control-R (^R) also retrieves sector
         information.


              UNDO: Undoes the changes made to the sector, even if has
         been altered and written to disk since the last change. Works
         in both display modes, even if you switch modes. However, if
         you've written a sector to disk, you can't undo it by simple
         pressing the key; you still have to write the sector back to












































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