The plain keyword is used to avoid having the content being inserted put inside a tag. By default, the content is inserted inside a <span> or a <div> tag (<span> is used if the output does not include <div>, <p> and other such tags.)
Although one could overload the theme_InsertNode_node() theme function, it is at times practical to be able to use both methods.
The plain keyword does not otherwise generate any output.
This keyword primary use is for adding CCK parameters inside HTML code as proposed by one of our users (see here):
Since I work a lot with the Internet, I often have people asking me whether the Yellow Pages are still useful...
The fact is, there are still many people using the Yellow Pages. Most advanced geek will use an online directory such as superpages.com. Yet, for certain things such as looking for a plumber, people still use the Yellow Pages.
So, how do I choose whether to have an ad in the Yellow Pages?
Simple! Take the latest Yellow Pages book you've received and look under your category and see what your competition does. If you have 1 or more full page advertiser, you bet that you have ...
If you have books and you are using the booktree module, then you can insert a book tree in another node using the Insert node module with the booktree parameter.
The book tree will start with the specified node.
This parameter is an extension that should be part of the booktree module and not of the Insert Node. It made not be supported in future versions (3.x, D7...)
The Insert Node module verifies that the user has permission to view that book tree. If not, nothing is output which means that the tag may instead generate ...
The CCK parameter let you insert one of your CCK field and some node fields that cannot otherwise be added without being themed.
We support CCK fields and several special field names as follow.
Fields that appeared after version 6-1.2 have a version specified between parenthesis (i.e. 6-1.3).
The CCK parameter must be followed by a field name. An empty name is likely to generate an error. The name of a field that does not exist is likely to generate nothing.
For instance, if you have a field named see_also, you would write:
The original document by Steve Hollasch can be found at http://steve.hollasch.net/cgindex/coding/ieeefloat.html