W3cubDocs

Input/output

LaTeX uses the ability to write to a file and later read it back in to build document components such as a table of contents or index. You can also read a file that other programs written, or write a file for others to read. You can communicate with users through the terminal. And, you can issue instructions for the operating system.

• \openin & \openout		Open a file.
• \read		Read text from a file.
• \typein		Read text from the terminal.
• \typeout		Write text to the terminal.
• \write		Write text to a file or terminal.