code: function fromBLC64(digits){
      var blc = "";
      for (var d=0, l=digits.length; d<l; ++d){
        var bits = base64Table[digits[d]];
        blc += d === 0 ? bits.slice(bits.indexOf("1")+1) : bits;
      };
      return fromBLC(blc);
    }
docs: String -> Term Converts a base64 binary lambda calculus string to a term.