diff --git a/commands/bug/completion.go b/commands/bug/completion.go
index f04468a87eb60f510c07dc7877e155e249ad111b..4764ee4c506654a337a0a79b3d9777763c3a0993 100644
--- a/commands/bug/completion.go
+++ b/commands/bug/completion.go
@@ -12,7 +12,7 @@ import (
 	"github.com/git-bug/git-bug/entities/common"
 )
 
-// BugCompletion perform bug completion (id, title) on the environment backend
+// BugCompletion perform bug completion (id) on the environment backend
 func BugCompletion(env *execenv.Env) completion.ValidArgsFunction {
 	return func(cmd *cobra.Command, args []string, toComplete string) (completions []string, directives cobra.ShellCompDirective) {
 		if err := execenv.LoadBackend(env)(cmd, args); err != nil {
@@ -26,7 +26,7 @@ func BugCompletion(env *execenv.Env) completion.ValidArgsFunction {
 	}
 }
 
-// BugWithBackend perform bug completion (id, title) on the given backend
+// BugWithBackend perform bug completion (id) on the given backend
 func BugWithBackend(backend *cache.RepoCache, toComplete string) (completions []string, directives cobra.ShellCompDirective) {
 	for _, id := range backend.Bugs().AllIds() {
 		if strings.Contains(id.String(), strings.TrimSpace(toComplete)) {
diff --git a/entities/board/snapshot.go b/entities/board/snapshot.go
index 9a87709f2847f69eaefd812084c5b96d6529d612..0065aed71ccd837ea28d4e067f09ca14cd8b5532 100644
--- a/entities/board/snapshot.go
+++ b/entities/board/snapshot.go
@@ -18,14 +18,22 @@ type Column struct {
 	Items      []Item
 }
 
+// Item is the interface that board item (draft, bug ...) need to implement.
 type Item interface {
+	// CombinedId returns the global identifier of the item.
 	CombinedId() entity.CombinedId
 
+	// Author returns the author of the item.
 	Author() identity.Interface
+
+	// Title returns the title of the item.
 	Title() string
 
-	// TODO: all items have status?
+	// TODO: add status, show bug's status, draft has no status
 	// Status() common.Status
+
+	// TODO: add labels, show bug's label, draft has no label
+	// Labels() []common.Label
 }
 
 var _ dag.Snapshot = &Snapshot{}
diff --git a/misc/random_bugs/create_random_bugs.go b/misc/random_bugs/create_random_bugs.go
index a7caf931c10a127c1f110e871815859db5a3125b..af1c6ea5ebae18477b7bc5ad89f18de27baa78f5 100644
--- a/misc/random_bugs/create_random_bugs.go
+++ b/misc/random_bugs/create_random_bugs.go
@@ -12,7 +12,7 @@ import (
 	"github.com/git-bug/git-bug/repository"
 )
 
-type opsGenerator func(bug.Interface, identity.Interface, int64)
+type opsGenerator func(bug.ReadWrite, identity.Interface, int64)
 
 type Options struct {
 	BugNumber    int
@@ -143,25 +143,25 @@ func paragraphs() string {
 	return strings.Replace(p, "\t", "\n\n", -1)
 }
 
-func comment(b bug.Interface, p identity.Interface, timestamp int64) {
+func comment(b bug.ReadWrite, p identity.Interface, timestamp int64) {
 	_, _, _ = bug.AddComment(b, p, timestamp, paragraphs(), nil, nil)
 }
 
-func title(b bug.Interface, p identity.Interface, timestamp int64) {
+func title(b bug.ReadWrite, p identity.Interface, timestamp int64) {
 	_, _ = bug.SetTitle(b, p, timestamp, fake.Sentence(), nil)
 }
 
-func open(b bug.Interface, p identity.Interface, timestamp int64) {
+func open(b bug.ReadWrite, p identity.Interface, timestamp int64) {
 	_, _ = bug.Open(b, p, timestamp, nil)
 }
 
-func close(b bug.Interface, p identity.Interface, timestamp int64) {
+func close(b bug.ReadWrite, p identity.Interface, timestamp int64) {
 	_, _ = bug.Close(b, p, timestamp, nil)
 }
 
 var addedLabels []string
 
-func labels(b bug.Interface, p identity.Interface, timestamp int64) {
+func labels(b bug.ReadWrite, p identity.Interface, timestamp int64) {
 	var removed []string
 	nbRemoved := rand.Intn(3)
 	for nbRemoved > 0 && len(addedLabels) > 0 {