Title: To convert a text file into a PDF, follow these steps:

1. **Open Your Text File**: open the text file you want to convert into a PDF format. This will be your source document for this conversion process.

      1. **Windows**: In Microsoft Word, open the file you want to convert into a PDF format. Click on 'File', then click on 'Save As'. Choose 'PDF' from the file type dropdown menu and give your new PDF file a name before clicking on 'Save'. 

      2. **MacOS**: Open your text document in Pages or any other compatible software. Go to 'File', then choose 'Export To'. Select 'PDF' as the format, and click 'Next'. Give your PDF a name and location, then click 'Export'.

      3. **Linux**: If you are using Linux, open your text file with LibreOffice or any other compatible software. Click on 'File', then choose 'Save As'. From the dropdown menu, select 'PDF' as the format, give it a name and location before clicking 'Save'.

2. **Edit if Necessary**: If necessary, edit your text file before converting it to a PDF. Make sure all formatting is correct, images are in place and tables are structured properly as these elements may not convert correctly during the process. 

3. **Save Your Document As A PDF**: Once you're satisfied with your document, save it as a PDF. 

4. **Use Online Conversion Tools**: If you don’t have access to any of these software or if you want an alternative method, there are many online tools that can convert text files into PDFs for free. Websites like SmallPDF, Zamzar and Convertio offer this service. Upload your file, select the output format as 'PDF', and download it after conversion is complete.

5. **Check Your Conversion**: After converting your document to a PDF, always check the final result for any formatting issues or missing elements that may have occurred during the process. 

6. **Save The New File**: Once you're satisfied with how the file looks in its new format, save it on your computer. This will be your final PDF version of the original text document.

Remember to always keep a copy of both your original text and converted PDF files for future reference or editing purposes.