1 files changed, 1 insertions, 0 deletions
diff --git a/README.md b/README.md
index 19fe88b..a27c982 100644
--- a/README.md
+++ b/README.md
@@ -619,6 +619,7 @@ At this time there exists no API stability guarantees.
    - `map(mode, key, function)` map a Lua function to `key` in `mode`, local to the given window
    - `style_define(id, style)` where `id` is a constant and `style` a string
    - `style(id, start, end)` apply style to file range, will be cleared after every redraw
+   - `viewport` a range denoting the currently visible area of the window
  - `cursor`
    - `line` (1 based), `col` (1 based)
    - `to(line, col)`