That & mdash; after executing the commands & mdash; the turtle moves up, draws a line, and then turns a quarter turn to the left. This because you have used the forward and the turnleft commands.
Que & mdash; tras executar as ordes & mdash; o sapoconcho rube, debuxa unha liña, e logo xira un cuarto de volta á esquerda. Isto é debido a que empregou as ordes avanza e xiraesquerda.