From crochet.about.com - How To Decrease and Increase In Afghan Stitch

Photos and Instructions

Afghan stitch is also called tunisian crochet.

To Increase In Afghan Stitch: Make a stitch in the horizontal stitch between the 2 perpendicular loops.

To Decrease In Afghan Stitch: Pick up 2 loops instead of 1. Yarn over hook, pull yarn through the 2 loops that you just picked up.

Images and instructions originally printed in the year 1917 in a crochet publication.

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