<Tr> <Td> TeX </Td> <Td_colspan="2"> \ O </Td> <Td_colspan="2"> \ o </Td> </Tr> <Ul> <Li> In Unicode, Ǿ and ǿ have the code points U + 01FE and U + 01FF . </Li> <Li> On Microsoft Windows, using the "United States - International" keyboard setting, it can be typed by holding down the Alt - Gr key and pressing "L". It can also be typed under any keyboard setting by holding down the Alt key while typing 0 2 1 6 (for uppercase) or 0 2 4 8 (for lowercase) on the numeric keypad, provided the system uses code page 1252 as system default . (Code page 1252 is a superset of ISO 8859 - 1, and 216 and 248 are the decimal equivalents of hexadecimal D8 and F8 .) </Li> <Li> In macOS, it can be typed by holding O, or o, and then typing 6 . In MacOS and earlier systems, using a US English - language keyboard, the letter can be typed by holding the (Option) key while typing O, or o, to yield Ø, or ø . </Li> <Li> In the X Window System environment, one can produce these characters by pressing Alt - Gr and o or O, or by pressing the Multi key followed with a slash and then o or O . </Li> <Li> In some systems, such as older versions of MS - DOS, the letter Ø is not part of the widely used code page 437 . In Scandinavian codepages, Ø replaces the yen sign (¥) at 165, and ø replaces the ¢ sign at 162 . </Li> <Li> On an Amiga operating system using any keyboard map, the letter can be typed by holding the (Alt) key while typing O, or o, to yield Ø, or ø . </Li> <Li> Using Microsoft Word, ø and Ø may be typed by pressing Ctrl - / followed by either minuscule or majuscule O . </Li> </Ul> <Li> In Unicode, Ǿ and ǿ have the code points U + 01FE and U + 01FF . </Li> <Li> On Microsoft Windows, using the "United States - International" keyboard setting, it can be typed by holding down the Alt - Gr key and pressing "L". It can also be typed under any keyboard setting by holding down the Alt key while typing 0 2 1 6 (for uppercase) or 0 2 4 8 (for lowercase) on the numeric keypad, provided the system uses code page 1252 as system default . (Code page 1252 is a superset of ISO 8859 - 1, and 216 and 248 are the decimal equivalents of hexadecimal D8 and F8 .) </Li>

What does o with line over it mean