Generic function
Returns the mapping for the specified text style on the specified port.
text-style-mapping port text-style #key character-set => font
<port>.
<text-style>.
<object>.
<object>.
duim-sheets
duim-sheets
Returns the mapping for text-style on port. Mapping text styles onto fonts lets you control how different text styles are displayed on different servers, depending on the connection. For instance, it is possible to define how colored text is displayed on monochrome displays, or how fonts specified by text-style are mapped onto fonts available on the display.
If character-set is specified, then this character set is used instead of the default. This is most useful for non-English displays.
text-style-mapping-exists?, page 369