diff --git a/server/src/apub/community.rs b/server/src/apub/community.rs
index 76a94ed2..36b9c703 100644
--- a/server/src/apub/community.rs
+++ b/server/src/apub/community.rs
@@ -112,7 +112,7 @@ impl CommunityForm {
       // TODO: should be parsed as html and tags like <script> removed (or use markdown source)
       //       -> same for post.content etc
       description: oprops.get_content_xsd_string().map(|s| s.to_string()),
-      category_id: 1,
+      category_id: 1, // -> peertube uses `"category": {"identifier": "9","name": "Comedy"},`
       creator_id: creator.id,
       removed: None,
       published: oprops
diff --git a/server/src/apub/post.rs b/server/src/apub/post.rs
index 48c8b2db..fa252c5e 100644
--- a/server/src/apub/post.rs
+++ b/server/src/apub/post.rs
@@ -79,18 +79,18 @@ impl PostForm {
       body: oprops.get_content_xsd_string().map(|c| c.to_string()),
       creator_id: creator.id,
       community_id: community.id,
-      removed: None,
-      locked: None,
+      removed: None, // -> Delete activity / tombstone
+      locked: None,  // -> commentsEnabled
       published: oprops
         .get_published()
         .map(|u| u.as_ref().to_owned().naive_local()),
       updated: oprops
         .get_updated()
         .map(|u| u.as_ref().to_owned().naive_local()),
-      deleted: None,
-      nsfw: false,
-      stickied: None,
-      embed_title: None,
+      deleted: None,     // -> Delete activity / tombstone
+      nsfw: false,       // -> sensitive
+      stickied: None,    // -> put it in "featured" collection of the community
+      embed_title: None, // -> attachment?
       embed_description: None,
       embed_html: None,
       thumbnail_url: None,
diff --git a/server/src/apub/user.rs b/server/src/apub/user.rs
index 404a9c10..d10093d4 100644
--- a/server/src/apub/user.rs
+++ b/server/src/apub/user.rs
@@ -76,7 +76,7 @@ impl UserForm {
       admin: false,
       banned: false,
       email: None,
-      avatar: None,
+      avatar: None, // -> icon, image
       updated: oprops
         .get_updated()
         .map(|u| u.as_ref().to_owned().naive_local()),