73 back-up files & end program +++++++++++++++++++++++++++ this section is used for making a back-up copy of your account- ing files and for signing out of the bookkeeping system. - the screen will display - - select 1 end program . 2 back-up files - enter your choice. if you select to end the program without making a backup copy of your records the screen will display a final message and the program will be ter- minated. - remove any diskette in the drive unit before turning off the computer hardware. - the exposed disk surfaces are sensitive and therefore the disk must be returned to the protective envelope. be sure to manage your diskettes with careful handling and secure storage. - in most instances you will be making a back-up copy of the new information you have just added to the system. making a copy of your records is a matter of significant import- ance. this process eliminates the risk of losing all your accounting records or having to spend a great deal of time rebuilding the accounting files from receipts or canceled checks and bank records. - this copying procedure reads the records from the 'data disk' then instructs you to remove the diskette and insert the 'back-up disk'. your new accounting file is then duplicated exactly. the new copy will replace any old version on the back-up disk. - follow the screen directions carefully and insert each diskette as instructed. the disk files are copied one at a time. first the chart of accounts - then the cash and revenue file and lastly the ledger expense records. - at the conclusion of the back-up sequence you will be automatically returned to the system's main directory. - store the back-up disk in a safe place. this is your in- surance of secure data.