3.1 Summary Buffer Format

3.1.1 Summary Buffer Lines		You can specify how summary lines should look.
3.1.2 To From Newsgroups		How to not display your own name.
3.1.3 Summary Buffer Mode Line		You can say how the mode line should look.
3.1.4 Summary Highlighting		Making the summary buffer all pretty and nice.

Gnus will use the value of the gnus-extract-address-components variable as a function for getting the name and address parts of a From header. Two pre-defined functions exist: gnus-extract-address-components, which is the default, quite fast, and too simplistic solution; and mail-extract-address-components, which works very nicely, but is slower. The default function will return the wrong answer in 5% of the cases. If this is unacceptable to you, use the other function instead:

(setq gnus-extract-address-components 'mail-extract-address-components)

gnus-summary-same-subject is a string indicating that the current article has the same subject as the previous. This string will be used with those specs that require it. The default is "".