So I have been told that some people when working flat items such as scarves and washcloths, slip the first stitch to make a prettier edge. I had been slipping them based on what stitch the pattern calls for, i.e. if it calls for a knit I slip knit wise, if it calls for a purl I slip purlwise. At my knitting group yesterday, one of the women in my group said you should always do it purlwise. I am confused. How do some of you do it?