LaTeX is a document preparation system. LaTeX uses markup to define structure of the document. LaTeX allows you to clearly separate the content from the format of your document. LaTeX gives high typographical quality for the documents especially for documents that are heavy on mathematics, but documents for any other area could also take advantage of these qualities.
This is a companion discussion topic for the original entry at https://blog.smc.org.in/malayalam-support-in-lyx/