Use a guitar support for the neck of your guitar as you lay it on a flat and solid surface. If you don’t have a guitar support, place the neck securely against your torso as you unwind the strings. Use one hand above the post and the other below it to twist an S around the post. Smoothly twist the string in a clockwise motion. Twist in the opposite direction for high strings on 3 + 3 headstocks.

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Write a summary of the previous text in Indonesian:
Pastikan gitar Anda berada dalam posisi stabil. Bentuklah senar menjadi huruf “S”. Selesai.