Additionally, instrument makers devised specialized pens for creating curved and dotted lines. Surveyors, navigators, and draftsmen also used pencils and crayons in holders such as those seen in the ...

A staple of the brain training craze has been Sudoku, a logic-based numbers game where players attempt to fill in a grid while operating under set parameters. While the puzzler has appeared in a ...

According to the Writing Instrument Manufacturers Association (WIMA) over three billion retractable ball point pens and over 500 million mechanical pencils were shipped in the US in 2007.