diff --git a/README.md b/README.md
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+++ b/README.md
@@ -32,9 +32,13 @@ running:
Robbert Krebbers .
* The folder [algebra](algebra) contains the COFE and CMRA constructions as well
as the solver for recursive domain equations.
-* The folder [program_logic](program_logic) builds the semantic domain of Iris,
- defines and verifies primitive view shifts and weakest preconditions, and
- builds some language-independent derived constructions (e.g., STSs).
+* The folder [base_logic](base_logic) defines the Iris base logic and the
+ primitive connectives. It also contains derived constructions that are
+ entirely independent of the choice of resources.
+* The folder [program_logic](program_logic) specializes the base logic to build
+ Iris, the program logic. Most crucially, this includes world satisfaction
+ and weakest preconditions. Furthermore, some language-independent derived
+ constructions (e.g., STSs) are defined in this folder.
* The folder [heap_lang](heap_lang) defines the ML-like concurrent heap language
* The subfolder [lib](heap_lang/lib) contains a few derived constructions
within this language, e.g., parallel composition.
@@ -51,4 +55,5 @@ running:
## Documentation
A LaTeX version of the core logic definitions and some derived forms is
-available in [docs/iris.tex](docs/iris.tex).
+available in [docs/iris.tex](docs/iris.tex). A compiled PDF version of this
+document is [http://plv.mpi-sws.org/iris/appendix-3.0.pdf](available online).