Convert WQ! to EQN

Understanding wq! and eqn file formats

wq! is not a standard file format, but rather a command used in the Vim text editor to write (save) and quit a file. On the other hand, an eqn file refers to a file containing mathematical equations written in the EQN language, which is used by the troff typesetting system for formatting mathematical expressions.

How to convert wq! to eqn

Since wq! is not a file format, but a command, the conversion process involves saving your mathematical content from Vim and ensuring it is formatted in the EQN language. Here’s how you can do it:

1. Open your text file in Vim and write your mathematical equations using the EQN syntax.
2. Save and quit the file by typing :wq! in Vim. This will save your file, typically with a .txt extension.
3. Rename your file to have a .eqn extension, or save it directly as filename.eqn in Vim using :w filename.eqn.

Best software for working with eqn files

The most recommended software for editing and converting files to the EQN format is Vim or any advanced text editor. For processing and rendering EQN files, use the GNU troff (groff) suite, which includes the eqn preprocessor.

• Vim: For editing and saving files in EQN syntax.
• GNU troff (groff): For processing and converting EQN files to other formats like PostScript or PDF.

Step-by-step conversion using Vim and groff

1. Write your equations in Vim using EQN syntax.
2. Save the file as filename.eqn using :w filename.eqn.
3. To convert the EQN file to a formatted document, use the command:
   groff -e -Tps filename.eqn > output.ps
4. For PDF output, convert the PostScript file using ps2pdf output.ps output.pdf.

Summary

While wq! is not a file format, you can use it in Vim to save your mathematical content in the EQN format. For further processing, groff is the best tool for handling EQN files.