diff --git a/config/config.go b/config/config.go
index 10a8fcb..c0915ea 100644
--- a/config/config.go
+++ b/config/config.go
@@ -1,9 +1,16 @@
 package config
 
+type Cfg struct {
+	*BaseConfig
+	ConfigFormat string
+}
+
+// definitions
+
 type Config interface {
 	Name() string
 	Children() []Config
-	AddChild(Config)
+	Add(Config)
 }
 
 type BaseConfig struct {
@@ -19,11 +26,11 @@ func (cfg *BaseConfig) Children() []Config {
 	return cfg.children
 }
 
-func (cfg *BaseConfig) AddChild(child Config) {
+func (cfg *BaseConfig) Add(child Config) {
 	cfg.children = append(cfg.children, child)
 }
 
-func MakeConfig(name string) Config {
+func MakeBase(name string) *BaseConfig {
 	return &BaseConfig{name: name}
 }
 
diff --git a/examples/demo/etc/etc.go b/examples/demo/etc/etc.go
index aa8ff3c..06caba4 100644
--- a/examples/demo/etc/etc.go
+++ b/examples/demo/etc/etc.go
@@ -1,9 +1,18 @@
 package etc
 
-import "git.sr.ht/~cco/go-scopes/config"
+import (
+	"git.sr.ht/~cco/go-scopes"
+	"git.sr.ht/~cco/go-scopes/config"
+)
 
 func Config() config.Config {
-	return config.MakeConfig("dummy")
+	b := config.MakeBase
+	cfg := scopes.Cfg{
+		BaseConfig: b("dummy"),
+		AppType:    "standard",
+	}
+	cfg.Add(config.Cfg{b("config"), "etc"})
+	return &cfg
 }
 
 const (
diff --git a/examples/demo/main.go b/examples/demo/main.go
index e57bef9..300267e 100644
--- a/examples/demo/main.go
+++ b/examples/demo/main.go
@@ -10,8 +10,8 @@ import (
 )
 
 func main() {
-	fmt.Println(etc.Config().Name())
 	fmt.Println(etc.Override()["name"])
 	cfg := config.Setup(etc.Config())
+	fmt.Println(cfg.Name())
 	scopes.RunApp(cfg)
 }
diff --git a/scopes.go b/scopes.go
index 1934eff..43f0b94 100644
--- a/scopes.go
+++ b/scopes.go
@@ -2,6 +2,11 @@ package scopes
 
 import "git.sr.ht/~cco/go-scopes/config"
 
+type Cfg struct {
+	*config.BaseConfig
+	AppType string
+}
+
 func RunApp(cfg config.Config) {
 	_ = cfg
 }
diff --git a/tests/etc/etc.go b/tests/etc/etc.go
index a1b0494..0f4795b 100644
--- a/tests/etc/etc.go
+++ b/tests/etc/etc.go
@@ -1,9 +1,18 @@
 package etc
 
-import "git.sr.ht/~cco/go-scopes/config"
+import (
+	"git.sr.ht/~cco/go-scopes"
+	"git.sr.ht/~cco/go-scopes/config"
+)
 
 func Config() config.Config {
-	return config.MakeConfig("dummy")
+	b := config.MakeBase
+	cfg := scopes.Cfg{
+		BaseConfig: b("dummy"),
+		AppType:    "standard",
+	}
+	cfg.Add(config.Cfg{b("config"), "etc"})
+	return &cfg
 }
 
 // collect here the names of fields that may be overridden via
@@ -12,8 +21,8 @@ const (
 	NAME = "name"
 )
 
-// in a production scenario this should be put in separate file `settings.go`
-// that should not be stored in code repository.
+// in a production scenario this should be put in separate
+// file `settings.go` that should not be stored in code repository.
 func Override() map[string]string {
 	return map[string]string{
 		NAME: "overridden",
diff --git a/tests/scopes_test.go b/tests/scopes_test.go
index 882cfad..0152e8e 100644
--- a/tests/scopes_test.go
+++ b/tests/scopes_test.go
@@ -15,8 +15,8 @@ func TestConfig(tb *tbase.T) {
 }
 
 func ConfigTest(t *testing.T) {
-	t.AssertEqual(etc.Config().Name(), "dummy")
 	t.AssertEqual(etc.Override()[etc.NAME], "overridden")
 	cfg := config.Setup(etc.Config())
+	t.AssertEqual(cfg.Name(), "dummy")
 	scopes.RunApp(cfg)
 }