README.md: Minor update of current status.
diff --git a/README.md b/README.md
index a610924..c35b16e 100644
--- a/README.md
+++ b/README.md
@@ -72,12 +72,12 @@ The list below corresponds to chapters of the specification version 0.26 and
more or less forms our to do list.
- **Preliminaries:**
- - [ ] 2.1 Character and lines
- - [ ] 2.2 Tabs
+ - [x] 2.1 Character and lines
+ - [x] 2.2 Tabs
- [ ] 2.3 Insecure characters
- **Blocks and Inlines:**
- - [ ] 3.1 Precedence
+ - [x] 3.1 Precedence
- [ ] 3.2 Container blocks and leaf blocks
- **Leaf Blocks:**