Assertion: byte's character | /r/HasProperty | output
Facets:
Source sentences:
text: The buffer is then used, six bits at a time, most significant first, as indices into the string: " ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/ ", and the indicated character is output.