Index of /pdf/centronics/horizon
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   DIR /pdf/centronics
       37401361-9A00_Horizon_H136A_Users_Manual_198409.pdf
       37401800-9A00_Model_H80_H136_Service_Manual_198405.pdf
       37401801-9B00_Horizon_H80A_Users_Manual_198404.pdf
       37401801_H80_Programming_Information.pdf