diff --git a/api.lua b/api.lua
index 17b2a1b..a894148 100644
--- a/api.lua
+++ b/api.lua
@@ -153,7 +153,7 @@ if cleaner.unsafe then
 
 	--- Retrieves list of ores to be removed.
 	--
-	--  @treturn table Ores to be replaced.
+	--  @treturn table Ores to be removed.
 	function cleaner.get_remove_ores()
 		return remove_ores
 	end
diff --git a/chat.lua b/chat.lua
index 73f9c52..83a6e34 100644
--- a/chat.lua
+++ b/chat.lua
@@ -211,9 +211,16 @@ end
 
 --- Removes nearby entities.
 --
+--  <h3>Required Privileges:</h3>
+--
+--  - server
+--
 --  @chatcmd remove_entities
 --  @param entity Entity technical name.
---  @tparam[opt] int radius
+--  @tparam[opt] int radius Search radius (default: 100).
+--  @usage
+--  # remove all mobs:horse entities within a radius of 10 nodes
+--  /remove_entities mobs:horse 10
 core.register_chatcommand(cmd_repo.entity.cmd, {
 	privs = {server=true},
 	description = S("Remove an entity from game.") .. "\n\n"
@@ -271,9 +278,16 @@ core.register_chatcommand(cmd_repo.entity.cmd, {
 
 --- Removes nearby nodes.
 --
+--  <h3>Required Privileges:</h3>
+--
+--  - server
+--
 --  @chatcmd remove_nodes
 --  @param node Node technical name.
---  @tparam[opt] int radius
+--  @tparam[opt] int radius Search radius (default: 5).
+--  @usage
+--  # remove all default:dirt nodes within a radius of 10
+--  /remove_nodes default:dirt 10
 core.register_chatcommand(cmd_repo.rem_node.cmd, {
 	privs = {server=true},
 	description = S("Remove a node from game.") .. "\n\n"
@@ -323,9 +337,16 @@ core.register_chatcommand(cmd_repo.rem_node.cmd, {
 
 --- Replaces an item.
 --
+--  <h3>Required Privileges:</h3>
+--
+--  - server
+--
 --  @chatcmd replace_items
 --  @param old_item Technical name of item to replace.
 --  @param new_item Technical name of item to be used in place.
+--  @usage
+--  # replace default:sword_wood with default:sword_mese
+--  /replace_items default:sword_wood default:sword_mese
 core.register_chatcommand(cmd_repo.item.cmd, {
 	privs = {server=true},
 	description = S("Replace an item in game.") .. "\n\n"
@@ -351,10 +372,17 @@ core.register_chatcommand(cmd_repo.item.cmd, {
 
 --- Replaces nearby nodes.
 --
+--  <h3>Required Privileges:</h3>
+--
+--  - server
+--
 --  @chatcmd replace_nodes
 --  @param old_node Technical name of node to replace.
 --  @param new_node Technical name of node to be used in place.
---  @tparam[opt] int radius
+--  @tparam[opt] int radius Search radius (default: 5).
+--  @usage
+--  # replace all default:dirt nodes with default:cobble within a radius of 10
+--  /replace_nodes default:dirt default:cobble 10
 core.register_chatcommand(cmd_repo.rep_node.cmd, {
 	privs = {server=true},
 	description = S("Replace a node in game.") .. "\n\n"
@@ -408,8 +436,15 @@ core.register_chatcommand(cmd_repo.rep_node.cmd, {
 
 --- Checks for nearby unknown nodes.
 --
+--  <h3>Required Privileges:</h3>
+--
+--  - server
+--
 --  @chatcmd find_unknown_nodes
---  @tparam[opt] int radius Search radius.
+--  @tparam[opt] int radius Search radius (default: 100).
+--  @usage
+--  # print names of all unknown nodes within radius of 10
+--  /find_unknown_nodes 10
 core.register_chatcommand(cmd_repo.find_node.cmd, {
 	privs = {server=true},
 	description = S("Find names of unknown nodes.") .. "\n\n"
@@ -464,8 +499,15 @@ core.register_chatcommand(cmd_repo.find_node.cmd, {
 
 --- Finds names of nearby nodes.
 --
+--  <h3>Required Privileges:</h3>
+--
+--  - server
+--
 --  @chatcmd find_nearby_nodes
---  @tparam[opt] int radius Search radius.
+--  @tparam[opt] int radius Search radius (default: 5).
+--  @usage
+--  # print names of all node types found within radius of 10
+--  /find_nearby_nodes 10
 core.register_chatcommand(cmd_repo.near_node.cmd, {
 	privs = {server=true},
 	description = S("Find names of nearby nodes.") .. "\n\n"
@@ -530,8 +572,15 @@ core.register_chatcommand(cmd_repo.near_node.cmd, {
 if cleaner.unsafe then
 	--- Registers an ore to be removed.
 	--
+	--  <h3>Required Privileges:</h3>
+	--
+	--  - server
+	--
 	--  @chatcmd remove_ores
 	--  @param ore Ore technical name.
+	--  @usage
+	--  # remove all registered ores that add default:stone_with_iron to world
+	--  /remove_ores default:stone_with_iron
 	core.register_chatcommand(cmd_repo.ore.cmd, {
 		privs = {server=true},
 		description = S("Remove an ore from game.") .. "\n\n"
@@ -570,9 +619,17 @@ end
 
 --- Manages settings for wielded [cleaner tool](tools.html).
 --
+--  <h3>Required Privileges:</h3>
+--
+--  - server
+--
 --  @chatcmd ctool
 --  @param action Action to execute. Can be "status", "setmode", or "setnode".
---  @param value Mode or node to be set for tool (not required for "status" action)..
+--  @param value Mode or node to be set for tool (not required for "status" action).
+--  @usage
+--  # while cleaner:pencil is wielded, configure to place default:dirt node when used
+--  /ctool setmode write
+--  /ctool setnode default:dirt
 core.register_chatcommand(cmd_repo.tool.cmd, {
 	privs = {server=true},
 	description = S("Manage settings for wielded cleaner tool.") .. "\n\n"