diff --git a/control_character.go b/control_character.go
index f998c40..28dedda 100644
--- a/control_character.go
+++ b/control_character.go
@@ -2,11 +2,18 @@ package feragstring
 
 import "fmt"
 
+// ControlCharacterSet is a struct for the control character
+// field in the FERAG messages that support control characters
+// (Route Info, Production Drop).
+// Supports currently only "D" (Don't Produce) and "T" (Bundles
+// to Secondary Exit).
 type ControlCharacterSet struct {
 	DontProduce            bool
 	BundlesToSecondaryExit bool
 }
 
+// NewControlCharacterSet instantiates a new Control Character Set
+// struct and returns a pointer to it.
 func NewControlCharacterSet() *ControlCharacterSet {
 	cc := ControlCharacterSet{
 		DontProduce:            false,
@@ -15,14 +22,18 @@ func NewControlCharacterSet() *ControlCharacterSet {
 	return &cc
 }
 
+// SetDontProduce sets the "don't produce" flag (D)
 func (cc *ControlCharacterSet) SetDontProduce() {
 	cc.DontProduce = true
 }
 
+// SetBundlesToSecondaryExit sets the "bundles to secondary exit" flag (T)
 func (cc *ControlCharacterSet) SetBundlesToSecondaryExit() {
 	cc.BundlesToSecondaryExit = true
 }
 
+// GetControlCharactersMessage returns the formatted FERAG string for
+// the control character set.
 func (cc *ControlCharacterSet) GetControlCharactersMessage() string {
 	var ccCount int
 	var ccString string