Since PDF Nomad cannot alter contents that are already part of the page streams, it cannot remove existing text from the actual PDF document structure. It can however remove text visually from pages by masking it out, and optionally overwriting it with a text with new text. PDF Nomad is even designed to make small corrections to text easy and efficient. See the section on text editing for details.
Due to the nature in which textual information can be stored in PDF documents, it may not always be possible for editors reading those files to extract textual information from the underlying page streams, even though the pages obviously contain text. When this is the case, and you try to extract text by selecting and copying it, then when you paste the text into, say, a word processor, what you end up with is likely to look like garbage. This is almost never due to an error of the editor (like PDF Nomad) reading the PDF data, but the consequence of the way the PDF was encoded. In these cases you may be able to restore the text by performing OCR on the document. Starting with version 2.0 PDF Nomad can OCR any PDF document. See the chapter on OCR for more information.