Q. What does MiB mean? I see it used in your documentation
MiB is the IEC abbreviation for mebibyte = 2^20 byte = 1 048 576 byte. The kibi and mebi prefixes are based on the 1998 IEC standard for binary multipes.
We use the kiB and MiB units when we want to be precise about a measurement of memory. Commercial and street usage of the MB abbreviation memory is typically ambiguous; MB can mean 10^6 = 1 000 000 or 2^20 = 1 048 576.