Documentation
Configuration / createdoc.fields
This option enables you to specify search/replace fields to be added to the create document dialog. This option should contain a comma separated list of fields where even item are the title of the field and the odd items are the variable names.
These fields will then be search/replaced within the template for example a field called title will search for ${title} and replace that with the contents specified by the user. This can be very useful when you want to setup specific fields like title, keywords and description.
$moxieManagerConfig['createdoc.fields'] = "title,Document title,keywords,Keywords";