Examples:
Simple
Custom buttons
Buttons manipulation
Custom settings
Custom functions

mark_it_up

Custom settings example

Code used

show layout code

  
  <%
  
    # See http://markitup.jaysalvat.com/documentation/ for the complete list of available settings
  
    miu_settings = MarkItUp.settings
  
    miu_settings[:previewParserPath] = "/mark_it_up/mirror_preview"
  
  %>
  
  
  
  <% content_for :head do %>
  
    <%= mark_it_up '#miu_test', miu_settings %>
  
  <% end %>
  
  
  
  <% form_tag do %>
  
    <%= text_area_tag "miu_test" %>
  
  <% end %>
  

For more info see http://github.com/cingel/mark_it_up