From 10b99f3ffb8d50e45d86001b6f900cf203235030 Mon Sep 17 00:00:00 2001
From: Greg <gmp@wow.st>
Date: Thu, 15 Aug 2019 09:32:39 -0400
Subject: [PATCH] Update docs.

---
 README.md         | 27 +++++++++++++++++++++++++++
 cmd/hello/main.go |  4 ++--
 main.go           |  2 +-
 3 files changed, 30 insertions(+), 3 deletions(-)

diff --git a/README.md b/README.md
index 5133b12..126bb5c 100644
--- a/README.md
+++ b/README.md
@@ -34,3 +34,30 @@ type Enclosure interface {
 
 func Enclose(e Enclosure, w ...Widget) Widget { ... }
 ```
+
+The `Context` struct also contains a `map[string]interface{}` allowing arbitrary
+data to be maintained. This can be used, for example, to define themes, and control
+the operation of a `WidgetCombinator` during operation. For example>
+
+```go
+type fWidget struct { l Layout }
+func NewfWidget(l layout) fWidget { return fWidget{ l: l } }
+
+func (f Flex) Flexible(v float32) Widget {
+	return NewfWidget(func(ctx Context) Context {
+		ctx.extra["Flexible"] = v
+		return ctx
+	})
+}
+
+...
+	ctx = giowrap.LayoutWithContext(ctx,
+		myFlex(
+			w1,
+			giowrap.Flexible(0.5),
+			w2,
+			giowrap.Flexible(1),
+			w3,
+		))
+...
+```
diff --git a/cmd/hello/main.go b/cmd/hello/main.go
index 52cbdc3..7eb3e94 100644
--- a/cmd/hello/main.go
+++ b/cmd/hello/main.go
@@ -57,9 +57,9 @@ func main() {
 						OuterInset(
 						    f(
 							e1,
-							f.Flexible(5),
+							giowrap.Flexible(5),
 							InnerInset(e2),
-							f.Flexible(10),
+							giowrap.Flexible(10),
 							btn,
 						)))
 					ctx.Draw()
diff --git a/main.go b/main.go
index 3ebbd9e..5da3546 100644
--- a/main.go
+++ b/main.go
@@ -149,7 +149,7 @@ type FlexChild struct {
 
 type Flex WidgetCombinator
 
-func (f Flex) Flexible(v float32) Widget {
+func Flexible(v float32) Widget {
 	return NewfWidget(func(ctx Context) Context {
 		ctx.extra["Flexible"] = v
 		return ctx