5-55. KEY LAYOUTFunctionDisplays a total amount.This key is used for item or subtotal discount by entering a percentage.(Optional key by initial setting)Feeds the label.Issues a test label.Adjusts the zero point.Changes the label issue mode between Automatic issue and manualissue. (Optional key by initial setting)Calls the PLU frequently used.Name of KeySTFEEDTESTZERO5.2 OPERATION KEYBOARD AND SPEED KEYBOARD1 70to%AUTO/MANUALNOTE: In ESB limited specification modeSpeed key (70 keys with no shift function)" " key is no-function as following mode.1) Page change in speed-key program mode2) Page change in unit-price-change mode at PLU DATA EDIT3) Second page print in speed-key report at read mode4) Page change in PLU calling by speed-key at Reg. mode