VSTACK and HSTACK are dynamic array functions, meaning the result spills from the cell in which you type the formula, and any changes to the data in the source arrays are reflected in the stacked ...

Excel doesn’t have a direct equivalent. To achieve the same result, you’d either have to piece together complex formulas with functions like SEARCH or write custom VBA scripts. While those approaches ...

From Adobe Acrobat to free online editors and built-in tools, here’s how to merge multiple PDFs into one document.

A few years ago, I had lunch with the head of a major motion picture studio, who declared that his central problem was not finding good people—it was finding good ideas. Since then, when giving talks, ...