Plain text files can be added to a Doc-O-Matic project in the Project Manager. Doc-O-Matic automatically uses the filename of the plain text file as topic ID. 

To assign another topic ID to your file, do one of the following:

• Change the filename.
• Add another topic ID using the Topic Identifier.
• Include a text file in a DTX file using the include tag or the Insert > Text Include command in the Topic Editor. If you include a text file, you do not have to change the file name of your text file.

To include a text file named description.txt and the topic ID New Topic ID:

• Create a DTX file named description.dtx (the name is not important) with the following content:

• Add the dtx file to the project. The topic New Topic ID, which contains text from your txt file description, is part of your project.
• Another way to assign another topic ID to the content of your plain text file is to transform it into a DTX file. Topic IDs in DTX files can be changed easily. For details, see Plain Text Files.