Hello, My question looks very simple: Ada has several Input/Output packages - DIRECT_IO, TEXT_IO, FLOAT_IO, MODULAR_IO, INTEGER_IO, FIXED_IO, DECIMAL_IO, EMERATION_IO, COMPLEX_IO, SEQUENTIAL_IO, STORAGE_IO, STREAM_IO (all???). Where I can find GOOD explanation about all these packages and when and how to use them? With best regards, Igor Izvarin