diff --git a/README.org b/README.org
index f504cce..1f4365c 100644
--- a/README.org
+++ b/README.org
@@ -4,8 +4,56 @@ extensions to [[https://github.com/balddotcat/ox-slimhtml][ox-slimhtml]].
Used to publish words I write.
** Installation
-You want to clone the repo, cd to it then do ~M-x package-install-file
-ox-plumhtml.el~
+You want to clone the repo, cd to it then do ~M-x
+package-install-file~ on ~ox-plumhtml.el~
+** Header IDs
+In org-mode you can do something like
+#+begin_example
+,#+plumhtml_header_ids:
+,* Header 1
+.....
+some content...
+.....
+,* Header 2
+[[Header 1][Link to header 1]]
+#+end_example
+And the link will jump back to =Header 1= when you click it.
+
+This is implemented in ox-plumhtml conditionally by setting the
+variable ~ox-plumhtml-export-header-ids~, or putting
+~#+plumhtml_header_ids: t~ in your org file.
+
+Exported contents look like this when set to nil:
+#+begin_src html
+
+
+
+
+Header 1
.....
+some content...
+.....
+
+Header 2
Link to header 1
+
+
+
+#+end_src
+And this when non-nil:
+#+begin_src html
+
+
+
+
+Header 1
.....
+some content...
+.....
+
+Header 2
Link to header 1
+
+
+
+#+end_src
+It adds some noise to the outputted file but it's worth it IMO.
** Functions
*** ~ox-plumhtml-export-as-html~
Makes a temporary buffer with the exported HTML.