MoinMoin processing instructions have the same semantics as in XML: they control the paths taken when processing a page. Processing instructions are lines that start with a "#" character followed by a keyword and optionally some arguments. Two consecutive hash marks at the start of a line are a comment that won't appear in the processed page.

Processing instructions this wiki knows of:

• ## any-text: comment
  
• #FORMAT format-specifier: defines the input format for this page, known formats are:
  
  • Wiki: default MoinMoin wiki markup
    
  • plain: normal plain text
    
  • html: normal html text
    
  • StructuredText ( not implemented)
    
• #REDIRECT pagename: redirect to a different page (see PageRedirect)
  
  

All PIs must appear at the very start of a page. An exception are comment PIs, those may appear within a wiki page (but obviously not in pages using other formats).

• #!processor-name: same as #format formatter
  
• #title title text: set the title of the page
  
• #action action name: set the default action instead of the EditText
  
• #keywords keywords: set the keywords of the Meta Tag
  
• #redirect url
  

For more information on the possible markup, see HelpOnEditing.