The aIO shared library is the lowest level library in the overall map of the BrainStem C API.  This library offers cross-platform interaction with Files, Streams, Serial Ports, TCP/IP Ports, Timing, and Directories.  In addition, many basic constructs are provided such as settings files, a tokenizer and pre-processor, symbol tables, and memory pools.  Most of the other code in the BrainStem API rests on top of these constructs.