diff --git a/config/config.go b/config/config.go
index 8828639..ab962be 100644
--- a/config/config.go
+++ b/config/config.go
@@ -1,22 +1,51 @@
 package config
 
-// Padding returns the amount of internal padding elements should have. An
-// element's inner content (such as text) should be inset by this amount,
-// in addition to the inset returned by the pattern of its background. When
-// using the aforementioned inset values to calculate the element's minimum size
-// or the position and alignment of its content, all parameters in the
-// PatternState should be unset except for Case.
-func Padding () int {
+type Config interface {
+	// Padding returns the amount of internal padding elements should have.
+	// An element's inner content (such as text) should be inset by this
+	// amount, in addition to the inset returned by the pattern of its
+	// background.
+	Padding () int
+	
+	// Margin returns how much space should be put in between elements.
+	Margin () int
+
+	// HandleWidth returns how large grab handles should typically be. This
+	// is important for accessibility reasons.
+	HandleWidth () int
+
+	// ScrollVelocity returns how many pixels should be scrolled every time
+	// a scroll button is pressed.
+	ScrollVelocity () int
+
+	// ThemePath returns the directory path to the theme.
+	ThemePath () string
+}
+
+// Default specifies default configuration values.
+type Default struct { }
+
+// Padding returns the default padding value.
+func (Default) Padding () int {
 	return 7
 }
 
-// Margin returns how much space should be put in between elements.
-func Margin () int {
+// Margin returns the default margin value.
+func (Default) Margin () int {
 	return 8
 }
 
-// HandleWidth returns how large grab handles should typically be. This is
-// important for accessibility reasons.
-func HandleWidth () int {
+// HandleWidth returns the default handle width value.
+func (Default) HandleWidth () int {
 	return 16
 }
+
+// ScrollVelocity returns the default scroll velocity value.
+func (Default) ScrollVelocity () int {
+	return 16
+}
+
+// ThemePath returns the default theme path.
+func (Default) ThemePath () (string) {
+	return ""
+}
diff --git a/config/parse.go b/config/parse.go
new file mode 100644
index 0000000..258d48f
--- /dev/null
+++ b/config/parse.go
@@ -0,0 +1,9 @@
+package config
+
+import "io"
+
+// Parse parses a configuration file and returns it as a Config.
+func Parse (source io.Reader) (config Config) {
+	// TODO
+	return Default { }
+}