diff --git a/scripts/base/frameworks/config/main.zeek b/scripts/base/frameworks/config/main.zeek
index 47525ee7b7..76744a9c4f 100644
--- a/scripts/base/frameworks/config/main.zeek
+++ b/scripts/base/frameworks/config/main.zeek
@@ -57,7 +57,7 @@ global option_cache: table[string] of OptionCacheValue;
 
 global Config::cluster_set_option: event(ID: string, val: any, location: string);
 
-function broadcast_option(ID: string, val: any, location: string)
+function broadcast_option(ID: string, val: any, location: string) &is_used
 	{
 	# There's not currently a common topic to broadcast to as then enabling
 	# implicit Broker forwarding would cause a routing loop.
@@ -145,7 +145,7 @@ function format_value(value: any) : string
 	return cat(value);
 	}
 
-function config_option_changed(ID: string, new_value: any, location: string): any
+function config_option_changed(ID: string, new_value: any, location: string): any &is_used
 	{
 	local log = Info($ts=network_time(), $id=ID, $old_value=format_value(lookup_ID(ID)), $new_value=format_value(new_value));
 	if ( location != "" )
diff --git a/scripts/base/frameworks/control/main.zeek b/scripts/base/frameworks/control/main.zeek
index 20cb93c234..61bee75f37 100644
--- a/scripts/base/frameworks/control/main.zeek
+++ b/scripts/base/frameworks/control/main.zeek
@@ -74,7 +74,7 @@ export {
 	global shutdown_response: event();
 }
 
-event terminate_event()
+event terminate_event() &is_used
 	{
 	terminate();
 	}
diff --git a/scripts/base/frameworks/logging/main.zeek b/scripts/base/frameworks/logging/main.zeek
index 6c57173a47..1e611b5d75 100644
--- a/scripts/base/frameworks/logging/main.zeek
+++ b/scripts/base/frameworks/logging/main.zeek
@@ -587,7 +587,7 @@ global filters: table[ID, string] of Filter;
 module Log;
 
 # Used internally by the log manager.
-function __default_rotation_postprocessor(info: RotationInfo) : bool
+function __default_rotation_postprocessor(info: RotationInfo) : bool &is_used
 	{
 	if ( info$writer in default_rotation_postprocessors )
 		return default_rotation_postprocessors[info$writer](info);
diff --git a/scripts/base/frameworks/software/main.zeek b/scripts/base/frameworks/software/main.zeek
index b6a86ba644..a4a26fcc72 100644
--- a/scripts/base/frameworks/software/main.zeek
+++ b/scripts/base/frameworks/software/main.zeek
@@ -459,8 +459,9 @@ function software_endpoint_name(id: conn_id, host: addr): string
 	return fmt("%s %s", host, (host == id$orig_h ? "client" : "server"));
 	}
 
-# Convert a version into a string "a.b.c-x".
-function software_fmt_version(v: Version): string
+# Convert a version into a string "a.b.c-x".  Marked "&is_used" because
+# while the base scripts don't call it, the optional policy/ scripts do.
+function software_fmt_version(v: Version): string &is_used
 	{
 	return fmt("%s%s%s%s%s",
 	           v?$major ? fmt("%d", v$major) : "0",
@@ -470,8 +471,8 @@ function software_fmt_version(v: Version): string
 	           v?$addl ? fmt("-%s", v$addl) : "");
 	}
 
-# Convert a software into a string "name a.b.cx".
-function software_fmt(i: Info): string
+# Convert a software into a string "name a.b.cx".  Same as above re "&is_used".
+function software_fmt(i: Info): string &is_used
 	{
 	return fmt("%s %s", i$name, software_fmt_version(i$version));
 	}
diff --git a/scripts/base/frameworks/sumstats/main.zeek b/scripts/base/frameworks/sumstats/main.zeek
index 8f8638b57b..feb8154ff3 100644
--- a/scripts/base/frameworks/sumstats/main.zeek
+++ b/scripts/base/frameworks/sumstats/main.zeek
@@ -330,7 +330,7 @@ function compose_resultvals(rv1: ResultVal, rv2: ResultVal): ResultVal
 	return result;
 	}
 
-function compose_results(r1: Result, r2: Result): Result
+function compose_results(r1: Result, r2: Result): Result &is_used
 	{
 	local result: Result = table();
 
diff --git a/scripts/base/misc/find-filtered-trace.zeek b/scripts/base/misc/find-filtered-trace.zeek
index 7d25e70a6f..511db74b10 100644
--- a/scripts/base/misc/find-filtered-trace.zeek
+++ b/scripts/base/misc/find-filtered-trace.zeek
@@ -13,7 +13,7 @@ export {
 	global enable: bool = T &redef;
 }
 
-function should_detect(): bool
+function should_detect(): bool &is_used
 	{
 	local args = zeek_args();
 
diff --git a/scripts/base/protocols/ftp/main.zeek b/scripts/base/protocols/ftp/main.zeek
index 9c00dbb475..f9da769fea 100644
--- a/scripts/base/protocols/ftp/main.zeek
+++ b/scripts/base/protocols/ftp/main.zeek
@@ -71,7 +71,7 @@ event zeek_init() &priority=5
 # Establish the variable for tracking expected connections.
 global ftp_data_expected: table[addr, port] of Info &read_expire=5mins;
 
-function minimize_info(info: Info): Info
+function minimize_info(info: Info): Info &is_used
 	{
 	# Just minimal data for sending to other remote Zeek processes.
 	# Generally, only data that's consistent across an entire FTP session or
@@ -103,7 +103,7 @@ const directory_cmds = {
 	["XPWD", 257],
 };
 
-function ftp_relay_topic(): string
+function ftp_relay_topic(): string &is_used
 	{
 	local rval = Cluster::rr_topic(Cluster::proxy_pool, "ftp_transfer_rr_key");
 
@@ -176,7 +176,7 @@ function ftp_message(s: Info)
 	delete s$data_channel;
 	}
 
-event sync_add_expected_data(s: Info, chan: ExpectedDataChannel)
+event sync_add_expected_data(s: Info, chan: ExpectedDataChannel) &is_used
 	{
 @if ( Cluster::local_node_type() == Cluster::PROXY ||
       Cluster::local_node_type() == Cluster::MANAGER )
@@ -189,7 +189,7 @@ event sync_add_expected_data(s: Info, chan: ExpectedDataChannel)
 @endif
 	}
 
-event sync_remove_expected_data(resp_h: addr, resp_p: port)
+event sync_remove_expected_data(resp_h: addr, resp_p: port) &is_used
 	{
 @if ( Cluster::local_node_type() == Cluster::PROXY ||
       Cluster::local_node_type() == Cluster::MANAGER )
diff --git a/scripts/base/protocols/irc/dcc-send.zeek b/scripts/base/protocols/irc/dcc-send.zeek
index 965f76b7fd..9687a4698e 100644
--- a/scripts/base/protocols/irc/dcc-send.zeek
+++ b/scripts/base/protocols/irc/dcc-send.zeek
@@ -33,7 +33,7 @@ export {
 
 global dcc_expected_transfers: table[addr, port] of Info &read_expire=5mins;
 
-function dcc_relay_topic(): string
+function dcc_relay_topic(): string &is_used
 	{
 	local rval = Cluster::rr_topic(Cluster::proxy_pool, "dcc_transfer_rr_key");
 
@@ -44,7 +44,7 @@ function dcc_relay_topic(): string
 	return rval;
 	}
 
-event dcc_transfer_add(host: addr, p: port, info: Info)
+event dcc_transfer_add(host: addr, p: port, info: Info) &is_used
 	{
 @if ( Cluster::local_node_type() == Cluster::PROXY ||
       Cluster::local_node_type() == Cluster::MANAGER )
@@ -56,7 +56,7 @@ event dcc_transfer_add(host: addr, p: port, info: Info)
 @endif
 	}
 
-event dcc_transfer_remove(host: addr, p: port)
+event dcc_transfer_remove(host: addr, p: port) &is_used
 	{
 @if ( Cluster::local_node_type() == Cluster::PROXY ||
       Cluster::local_node_type() == Cluster::MANAGER )