To create a new style from an existing one, use
as follows. This is a good way to fix something you don't like about a
particular publishing style, or to personalize it.
The derived name is a string defining the new style, such as "my-html". The base name must identify an existing style, such as "html" – if you have loaded muse-html. The style parameters are the same as those used to create a style, except that they override whatever definitions exist in the base style. However, some definitions only partially override. The following parameters support partial overriding.
See Style Elements, for a complete list of all parameters.