The name Tcl is derived from Tool Command Language and is pronounced tickle. Tcl is a radically simple open-source interpreted programming language that provides common facilities such as variables, procedures, and control structures as well as many useful features that are not found in any other major language.n most Linux systems, Tcl/Tk is already installed. You can find out by typing tclsh at a console prompt (xterm or such). If a % prompt appears, you're already set. Just to make sure, type info pa at the % prompt to see the patchlevel (e.g. 8.4.9) and info na to see where the executable is located in the file system.
Because its nervous system is similar to that of grasshoppers and ants, lobsters are sometimes called bugs.. When food is scarce, lobsters can turn cannibal and dine on smaller lobsters. Lobsters reproduce by laying lobster eggs.
A lobster's two claws can come in several different forms (crusher and cutter, two crushers or two cutters). It has four spindly antennae and sensing hairs that allow it to smell amino acid in its prey. And that prey could be a lot of things: lobsters eat up to 100 types of animals and, occasionally, plants. They're even known to munch on one of their vulnerable lobster brethren, though that's more common in captivity (it's also why captive lobsters have rubber bands on their claws).