• s1.b: what a string looks like
• ascii.b: ascii table printer
• s2.b: of course you could make strings by hand
• b1.b: selector and byte operators
• b2.b: from operator - extract bits from a single word
  Use OF with a vector or pointer.
• b3.b: BYTE and OF to play with a string
• b4.b: strlen (sort of)
• s3.b: ins(), reading a string
• r1.b: reading from magnetic tape, filename on command line
• r2.b: reading from magnetic tape, interactive program
• d1.b: disc read and write operations