Suggestions for emacs mode that can do internal links

Hi I am new to emacs. I have a simple need in mind and would like to ask if there exists a mode for my requirements. ​ I have a large library of txt files in the range of 1-2 millions (archival stuff). What I basically look for is some mode that can do something along the lines of: \- Internal links that can reference particular paragraphs in other files (in Obsidian called ['link to blocks](https://help.obsidian.md/How+to/Link+to+blocks)') \- Transclusion ... and do so with the large number of files; that is to say, not a *personal* knowledge base, but a solid archival library. I have in mind pretty much what [Obsidian internal links](https://help.obsidian.md/How+to/Internal+link) can do. I know there is [howm](https://howm.osdn.jp), [freex](https://github.com/gregdetre/emacs-freex), and org-roam (though I've heard the latter can only handle well *personal* knowledge base, not a larger archive library).

This kind of thing is in fact not _that_ hard to write yourself, you can write an xref back-end for example, see: [xref-rst](https://codeberg.org/ideasman42/emacs-xref-rst) - even though this implements linking for reStructuredText you could use it as a reference for linking between files using your own syntax. It's up to you how you handle searches, if you cache link information or use an external tool.

This sounds a lot like the original use case for [Hyperbole](https://www.gnu.org/software/hyperbole/), if my distant memory is working.

org- transclusion

A very simple one, **LinkD**: https://www.emacswiki.org/emacs/download/linkd.el

Surprised nobody has said this: vanilla Org Mode does everything you want. Hyperbole was mentioned, and it's (IMO) a slightly better solution for your first requirement, but offers nothing (AFAICT) for your second, which Org does offer.

AFAICT, org-mode can't do this. You can't link to arbitrary unmarked paragraphs in org. It also can't do transclusion.

You're quite right about the first point (links to arbitrary text). My bad. Not the second though. You can use `#+INCLUDE` directives for Org files (see `(info "(org) Include Files")`). You can call code blocks from other files too: `(info "(org) Evaluating Code Blocks")`.