Note: The intercharacter interval may be of any duration. The signal sense of the intercharacter interval is always the same as the sense of the stop element, i.e. , "1" or "mark[?]."
Source: from Federal Standard 1037C and from MIL-STD-188
... a list of federal agencies, part of the executive branch of the United States government.
ABMC - American Battle Monuments Commission[?]
ACHP - Advisory Council on ...
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