The new macro function %SYSFUNC (SASÂ® rel 6.12) allows access by the macro processor to most data step. functions and several SCL functions. Solutions to many. common macro tasks can now be simpler and more. efficient. In addition, many of the SCL functions allow the. programmer to manipulate external files directly from the.
Lancelet. Branchiostoma lanceolatum, or Amphioxus lan-ceolatus) , a chordate animal of subphylum Acrania (Cephalo-chordata). The body of the lancelet is transparent, up to 8 cm long, and pointed at both ends.The notochord extends into the anterior end of the body.The caudal fin is lancet-shaped.ranchiostoma lanceolatum, or Amphioxus lan-ceolatus) , a chordate animal of subphylum Acrania (Cephalo-chordata). The body of the lancelet is transparent, up to 8 cm long, and pointed at both ends. The notochord extends into the anterior end of the body. The caudal fin is lancet-shaped.
Equisetum (/ËÉkwÉ¨ËsiËtÉm/ ; horsetail, snake grass, puzzlegrass) is the only living genus in Equisetaceae, a family of vascular plants that reproduce by spores rather than seeds.quisetum is a  living fossil  as it is the only living genus of the entire class Equisetopsida, which for over one hundred million years was much more diverse and dominated the understory of late Paleozoic forests.