Maple V Release 2.0 (November 17, 1992)

notes
“Maple V Release 2 provided the first "worksheet" interface for all platforms, which lets you include text, math, and plots together in the document. Output of commands was displayed in text-book standard mathematical notation for the first time.”

“Starting in Maple V Release 2, the assume facility allowed you to give Maple extra information about your problem, such as "x is positive" or "y is not zero". That way, Maple could perform simplifications that do not hold in the general case”

“Introduced worksheets, real mathematical formula output, and a help browser.”