<< Now I have an understanding but how do you know all the codes. >>
Search for the term "ASCII character chart" and you should find a table giving all the character codes. There are 256 in standard ASCII. However, only the first 128 are "agreed on" and can be expected to display the same character in all fonts. Above that, what you see is font specific. You can also use Start Menu | All Programs | Accessories | System Tools | Character Map to see a list of _printable_ characters in all fonts installed on your computer. This applet will also show you the number associated with each character but unfortunately in hexadecimal -- R:Base wants regular base ten numbers. 10 is a line feed, 13 a carriage return. On MS based systems, you technically need both (13 first, then 10) to indicate a new line, although I believe R:Base will actually accept a 10 alone. Other systems (eg, Linux) use only a 10 (line feed) character to indicate a new line. 9 is a tab, and 7 is the character generally known as "ESCAPE" which used to be critical in sending command codes to printers. -- Larry

