diff --git a/scripts/base/frameworks/intel/cluster.zeek b/scripts/base/frameworks/intel/cluster.zeek
index 2d51ffb200..53ac323fa5 100644
--- a/scripts/base/frameworks/intel/cluster.zeek
+++ b/scripts/base/frameworks/intel/cluster.zeek
@@ -6,9 +6,10 @@
 
 module Intel;
 
-# Internal events for cluster data distribution.
-global insert_item: event(item: Item);
-global insert_indicator: event(item: Item);
+# Internal events for cluster data distribution.  Marked as &is_used since
+# they're communicated via Broker.
+global insert_item: event(item: Item) &is_used;
+global insert_indicator: event(item: Item) &is_used;
 
 # If this process is not a manager process, we don't want the full metadata.
 @if ( Cluster::local_node_type() != Cluster::MANAGER )
diff --git a/scripts/base/frameworks/notice/main.zeek b/scripts/base/frameworks/notice/main.zeek
index a5a8b13ad3..b5d3ec4a32 100644
--- a/scripts/base/frameworks/notice/main.zeek
+++ b/scripts/base/frameworks/notice/main.zeek
@@ -585,7 +585,7 @@ function is_being_suppressed(n: Notice::Info): bool
 
 # Executes a script with all of the notice fields put into the
 # new process' environment as "ZEEK_ARG_<field>" variables.
-function execute_with_notice(cmd: string, n: Notice::Info) &deprecated
+function execute_with_notice(cmd: string, n: Notice::Info) &deprecated="Remove in v6.1.  Usage testing indicates this function is unused."
 	{
 	# TODO: fix system calls
 	#local tgs = tags(n);
diff --git a/scripts/base/frameworks/signatures/main.zeek b/scripts/base/frameworks/signatures/main.zeek
index 662081bb83..51760b5d1f 100644
--- a/scripts/base/frameworks/signatures/main.zeek
+++ b/scripts/base/frameworks/signatures/main.zeek
@@ -150,7 +150,7 @@ event zeek_init() &priority=5
 
 # Returns true if the given signature has already been triggered for the given
 # [orig, resp] pair.
-function has_signature_matched(id: string, orig: addr, resp: addr): bool &deprecated
+function has_signature_matched(id: string, orig: addr, resp: addr): bool &deprecated="Remove in v6.1.  Usage testing indicates this function is unused."
 	{
 	return [orig, resp] in vert_table ? id in vert_table[orig, resp] : F;
 	}
diff --git a/scripts/base/frameworks/software/main.zeek b/scripts/base/frameworks/software/main.zeek
index 53d91861fd..7e7631a4f3 100644
--- a/scripts/base/frameworks/software/main.zeek
+++ b/scripts/base/frameworks/software/main.zeek
@@ -454,7 +454,7 @@ function cmp_versions(v1: Version, v2: Version): int
 	return 0;
 	}
 
-function software_endpoint_name(id: conn_id, host: addr): string &deprecated
+function software_endpoint_name(id: conn_id, host: addr): string &deprecated="Remove in v6.1.  Usage testing indicates this function is unused."
 	{
 	return fmt("%s %s", host, (host == id$orig_h ? "client" : "server"));
 	}
diff --git a/scripts/base/frameworks/sumstats/non-cluster.zeek b/scripts/base/frameworks/sumstats/non-cluster.zeek
index 69b93e8840..5bf615fcaf 100644
--- a/scripts/base/frameworks/sumstats/non-cluster.zeek
+++ b/scripts/base/frameworks/sumstats/non-cluster.zeek
@@ -71,7 +71,7 @@ function data_added(ss: SumStat, key: Key, result: Result)
 		threshold_crossed(ss, key, result);
 	}
 
-function request(ss_name: string): ResultTable &deprecated
+function request(ss_name: string): ResultTable &deprecated="Remove in v6.1.  Usage testing indicates this function is unused."
 	{
 	# This only needs to be implemented this way for cluster compatibility.
 	return when [ss_name] ( T )
diff --git a/scripts/base/frameworks/sumstats/plugins/std-dev.zeek b/scripts/base/frameworks/sumstats/plugins/std-dev.zeek
index b3feffa690..a181923b10 100644
--- a/scripts/base/frameworks/sumstats/plugins/std-dev.zeek
+++ b/scripts/base/frameworks/sumstats/plugins/std-dev.zeek
@@ -23,7 +23,7 @@ function calc_std_dev(rv: ResultVal)
 		rv$std_dev = sqrt(rv$variance);
 	}
 
-hook std_dev_hook(r: Reducer, val: double, obs: Observation, rv: ResultVal) &deprecated
+hook std_dev_hook(r: Reducer, val: double, obs: Observation, rv: ResultVal) &deprecated="Remove in v6.1.  Usage testing indicates this function is unused."
 	{
 	calc_std_dev(rv);
 	}
diff --git a/scripts/base/protocols/ftp/utils-commands.zeek b/scripts/base/protocols/ftp/utils-commands.zeek
index af209d13a9..5cbc4515b1 100644
--- a/scripts/base/protocols/ftp/utils-commands.zeek
+++ b/scripts/base/protocols/ftp/utils-commands.zeek
@@ -133,7 +133,7 @@ function remove_pending_cmd(pc: PendingCmds, ca: CmdArg): bool
 		return F;
 	}
 
-function pop_pending_cmd(pc: PendingCmds, reply_code: count, reply_msg: string): CmdArg &deprecated
+function pop_pending_cmd(pc: PendingCmds, reply_code: count, reply_msg: string): CmdArg &deprecated="Remove in v6.1.  Usage testing indicates this function is unused."
 	{
 	local ca = get_pending_cmd(pc, reply_code, reply_msg);
 	remove_pending_cmd(pc, ca);
diff --git a/scripts/base/protocols/radius/consts.zeek b/scripts/base/protocols/radius/consts.zeek
index 760d4174e3..06cb014e31 100644
--- a/scripts/base/protocols/radius/consts.zeek
+++ b/scripts/base/protocols/radius/consts.zeek
@@ -182,7 +182,7 @@ const attr_types: table[count] of string = {
 	[171] = "Delegated-IPv6-Prefix-Pool",
 	[172] = "Stateful-IPv6-Address-Pool",
 	[173] = "IPv6-6rd-Configuration"
-} &default=function(i: count): string { return fmt("unknown-%d", i); } &deprecated;
+} &default=function(i: count): string { return fmt("unknown-%d", i); } &deprecated="Remove in v6.1.  Usage testing indicates this function is unused.";
 
 const nas_port_types: table[count] of string = {
 	[0] = "Async",
@@ -205,7 +205,7 @@ const nas_port_types: table[count] of string = {
 	[17] = "Cable",
 	[18] = "Wireless - Other",
 	[19] = "Wireless - IEEE 802.11"
-} &default=function(i: count): string { return fmt("unknown-%d", i); } &deprecated;
+} &default=function(i: count): string { return fmt("unknown-%d", i); } &deprecated="Remove in v6.1.  Usage testing indicates this function is unused.";
 
 const service_types: table[count] of string = {
 	[1] = "Login",
@@ -219,7 +219,7 @@ const service_types: table[count] of string = {
 	[9] = "Callback NAS Prompt",
 	[10] = "Call Check",
 	[11] = "Callback Administrative",
-} &default=function(i: count): string { return fmt("unknown-%d", i); } &deprecated;
+} &default=function(i: count): string { return fmt("unknown-%d", i); } &deprecated="Remove in v6.1.  Usage testing indicates this function is unused.";
 
 const framed_protocol_types: table[count] of string = {
 	[1] = "PPP",
@@ -228,4 +228,4 @@ const framed_protocol_types: table[count] of string = {
 	[4] = "Gandalf proprietary SingleLink/MultiLink protocol",
 	[5] = "Xylogics proprietary IPX/SLIP",
 	[6] = "X.75 Synchronous"
-} &default=function(i: count): string { return fmt("unknown-%d", i); } &deprecated;
+} &default=function(i: count): string { return fmt("unknown-%d", i); } &deprecated="Remove in v6.1.  Usage testing indicates this function is unused.";
diff --git a/scripts/base/protocols/smb/smb1-main.zeek b/scripts/base/protocols/smb/smb1-main.zeek
index 29d5af2446..9a19f27b95 100644
--- a/scripts/base/protocols/smb/smb1-main.zeek
+++ b/scripts/base/protocols/smb/smb1-main.zeek
@@ -271,7 +271,7 @@ event smb1_write_andx_request(c: connection, hdr: SMB1::Header, file_id: count,
 	c$smb_state$pipe_map[file_id] = c$smb_state$current_file$uuid;
 	}
 
-event smb_pipe_bind_ack_response(c: connection, hdr: SMB1::Header) &deprecated
+event smb_pipe_bind_ack_response(c: connection, hdr: SMB1::Header) &deprecated="Remove in v6.1.  Usage testing indicates this function is unused."
 	{
 	if ( ! c$smb_state?$current_file || ! c$smb_state$current_file?$uuid )
 		{
@@ -283,7 +283,7 @@ event smb_pipe_bind_ack_response(c: connection, hdr: SMB1::Header) &deprecated
 	c$smb_state$current_cmd$argument = SMB::rpc_uuids[c$smb_state$current_file$uuid];
 	}
 
-event smb_pipe_bind_request(c: connection, hdr: SMB1::Header, uuid: string, version: string) &deprecated
+event smb_pipe_bind_request(c: connection, hdr: SMB1::Header, uuid: string, version: string) &deprecated="Remove in v6.1.  Usage testing indicates this function is unused."
 	{
 	if ( ! c$smb_state?$current_file || ! c$smb_state$current_file?$uuid )
 		{
@@ -296,7 +296,7 @@ event smb_pipe_bind_request(c: connection, hdr: SMB1::Header, uuid: string, vers
 	c$smb_state$current_cmd$argument = fmt("%s v%s", SMB::rpc_uuids[uuid], version);
 	}
 
-event smb_pipe_request(c: connection, hdr: SMB1::Header, op_num: count) &deprecated
+event smb_pipe_request(c: connection, hdr: SMB1::Header, op_num: count) &deprecated="Remove in v6.1.  Usage testing indicates this function is unused."
 	{
 	if ( ! c$smb_state?$current_file )
 		{