Hi phixon.
As Susan pointed out, use a TV to display the chunk on all sites.
1. Create a new TV. For example "includeChunk" (go to Elements -> Manage Elements -> Template Variables -> Click "New Template Variable").
2. Set the type to text, textarea or textarea(mini). It depends on the amount of information you have to insert.
3. Set the default value to @inherit (see below).
4. Make the TV available in all relevant templates.
5. Safe the new TV.
6. Include [*includeChunk*] in your templates to output its content.
What is @inherit?
You can make use of the @inherit binding to give a default content to the TV in all descendant pages (see
http://wiki.modxcms.com/index.php/@INHERIT_Binding)
So, if your project is organized like this:
homepage
*about
*services
**webdesign
**print design
*...
adding the chunk to the TV inside "homepage" will automatically insert this chunk in all it’s children.
If you are worried, editors might mess up your code, restrict the TV only to be modified by users with adminstrative rights and hide it from view to all other users with managermanager.
Good luck,
pepebe