» " _ " (aka underscore)
An underscore, for online purposes, is simply naother character, like any punctuation mark, letter or number. You can type the underscore by holding down "Shift" + "-" at the same time. Commonly used in file naming conventions and online to separate words in a given URI/URL (website address or file address), it can be alternated with the hyphen (aka "minus sign") for visual separation of terms. The word "underscore" can also be used in other ways not relating to the Internet such as "I point this situation out only to underscore the importance of safety in the workplace"...
» "-" (aka minus sign, hyphen, dash)
Another common character used to separate terms online. Type the hyphen symbol by pressing the keyboard key between the "0" and the "+" signs on the standard horizontal number pad of most keyboards.
» "+" (aka the "plus sign")
Some search engines interpret the "+" sign as a space (whitespace character), so the file name "web+page+name.html" would translate literally into "web page name.html" online. The + is sometimes used in URL's to separate terms, much like the underscore (_) and the hyphen (-).
» "=" (aka "equals" sign)
Aside from obvious uses in mathmatics, the equal sign can often be seen in dynamically generated URL's where variables such as item numbers, session id's and other information are being passed back and forth from client side browsers to the server to the database and back again. Overall however, the = sign has many, many, many uses in the English language such as to set two things equal to one another through pictoral represenataion or shorthand, or in programming to set a value or character type.
» "&" (aka ampersand)
Used in everyday language to mean "and", the ampersand takes on new significance on the Internet when used in dynamic programming languages such as ASP, PHP, ColdFusion and others.
