Output Text File Tab Output drop-down menu > Properties > Text File tab. Customize file name, file format, caption, and location options for Text captures. Options apply to Text capture mode. Option Description TXT - Text File Default option for a text capture. Annotate captures Add a caption to the text capture output. Caption prefix Enter text that appears before each text caption. Append to file Add each text capture to the end of a single file. Ask for file name Enter a file name for each capture. Fixed file name Assign the same file name to each text capture. Use to continually and automatically update the same output file. Name Enter the file name if using a Fixed file name. Automatic file name Snagit automatically names a series of captures for you. Use if you want to automate the capture process to run unattended. See Automatic File Name Options. Output folder Select a folder for your captures.