Word 97 introduced the template-driven document wizard, real-time spell checking with wavy red underlines, and grammar checking. It also standardized the .doc format, which remained the dominant word processing format until the introduction of .docx in Office 2007. Microsoft Excel 97

Office 97 Professional Edition (SR1) : Microsoft - Internet Archive

The gold standard for word processing that introduced the grammar checker.

The web-based, free versions of Word and Excel can import older formats and convert them to modern, XML-based formats ( .docx , .xlsx ) automatically. Conclusion