The Roth IRA's principal difference from most other tax advantaged retirement plans is that, rather than granting a tax break for money placed into the plan, the tax break is granted on the money withdrawn from the plan during retirement.
DK is a UK (and maybe Australia - but not sure on that) weight of yarn ... Double knit or DK weight is heavier than sportweight and lighter than worsted weight. Here are the guage ranges for a 4 st st swatch. # of sts is the number of stitches in 4 inches.
Charka: A spinning wheel design for spinning short staple fibers that require a lot of twist such as cotton. Drafting is done with one hand while the other turns the wheel. Charkas typically have very high drive ratios and the yarn is wound onto a spindle instead of a bobbin.