Update README.md about public APIs.
No change in policy but make the public API distinction
more well known.
Change-Id: I3593fc557d15a86cb5caf6c3c92c85952127088a
Reviewed-on: https://pdfium-review.googlesource.com/c/47650
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Tom Sepez <tsepez@chromium.org>
diff --git a/README.md b/README.md
index f2f6adf..574e032 100644
--- a/README.md
+++ b/README.md
@@ -142,6 +142,14 @@
you see failures, it can be a good idea to run the tests on the tip-of-tree
checkout to see if the same failures appear.
+## Embedding PDFium in your own projects
+
+The public/ directory contains header files for the APIs available for use by
+embedders of PDFium. We endeavor to keep these as stable as possible.
+
+Outside of the public/ directory, code may change at any time, and embedders
+should not directly call these routines.
+
## Code Coverage
Code coverage reports for PDFium can be generated in Linux development
