I am a novice in schematic. Now I am ploting the schematic of BF518, but I am a little perplexed about how to handle some unused pins. The data sheet only indicates how to handle parts of pins if they are not used. I've got several unused pins in my schematics and they are 3-6,10-13,18-21,25-27,32,36-39,47,48,81,84,85,120-123,130,140,144,150,156,162,165-168,171 and 174 stated in the page 62 of BF518 data sheet. Does anybody know how to handle these pins if I don't employ them in my schematic?