1. In a worksheet, click where you want to insert the read or write function.
2. Type the function name or insert it from the File Access list on the Functions tab.
If you type the function name, you must label it as Function.
3. Type the function arguments.
To insert the file argument string, on the Input/Output tag, in the Data Import/Export group, click Data Filename and select the file.
4. To view the read file data or to write a file to your computer, evaluate the function. The data is displayed in a matrix. If you use a write function, the file is written to your current working directory.