code: function (blockname) {
              this._stack.push(this._curblock);
              this._curblock = this._blocks[blockname];
              if (this.indentUnit && this._curblock) {
                  this._updateIndent();
              }
          }
docs: Enter an output block. Any output operation (write or writeln) will output it's content in this block
  @param {String} blockname Name of the block