red crab at top view

>For other uses, see Crab (disambiguation). DromiaceaRaninoidaHeterotremataThoracotremata The term crab is often applied to several different groups of short (nose to tail) decapods with thick exoskeletons, but only members of the Brachyura are true crabs; other taxa, such as hermit crabs, porcelain crabs, king crabs, and horseshoe crabs are, despite superficial similarities, not crabs at all. Hermit crabs, king crabs and porcelain crabs belong to the Anomala and can be distinguished from true crabs by counting the legs - in Anomala, the last pair of pereiopods (walking legs) is hidden inside the carapace and so only four pairs are visible (counting the claws), whereas uninjured true crabs always have five visible pairs. See more at Wikipedia.org...

[ext-mode MS-DOS multitasker written by IBM and released in 1985. In order to compete with various other graphical environments, IBM announced TopView before it was finished, around the time they shipped their new PC AT computer (in 1984).IBM considered that in order to harness the great power and memory capacity of the new machine (Intel 80286 with a 6 MHz clock and, in version 02, with 512 KB of RAM), some multitasking environment was necessary. TopView allowed IBM to sweeten the deal with customers, who were surprised that the new and very expensive machine did not come with an operating system able to use the hardware multitasking and protected-mode features of the new CPU, and was still running in 8088 emulation mode. However, TopView proved unnecessary to sell the new machines, and was quickly EOL-ed. See more at Wikipedia.org...]