Missing option ppi in documentation (indent 2.2.9)

Nils Ohlmeier <[email protected]>
Newsgroups gmane.comp.gnu.indent.bugs
Organization iptelorg
Message-ID <[email protected]> 
Hello,

the new option -ppi is mentioned in the documentation (section 1.8) of indent 
2.2.9. But neither the short nor the long version of ppi is explained in the 
documentation.

Thanks
  Nils
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