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and the legend that is provided isn't that helpful:

> Legend: [posix] <lsb> (development) {toolbox} =klibc= #sash# @sbase@ *beastiebox* $tizen$ -fhs- .yocto. %shell% +request+

I think each of these symbols represents where a command was defined (e.g., commands in square brackets came from POSIX.1).

This is just where the command originated from.