diff --git a/Shorewall/Perl/Shorewall/Config.pm b/Shorewall/Perl/Shorewall/Config.pm
index c42db730c..dc5beb5a0 100644
--- a/Shorewall/Perl/Shorewall/Config.pm
+++ b/Shorewall/Perl/Shorewall/Config.pm
@@ -2908,6 +2908,11 @@ sub get_params() {
 	    #
 	    # getparams was interpreted by bash
 	    #
+	    # - Variable names are preceded by 'declare -x '
+	    # - Param values are delimited by double quotes
+	    # - Embedded double quotes are escaped with '\\'
+	    # - Valueless variables are supported (e.g., 'declare -x foo')
+	    #
 	    for ( @params ) {
 		if ( /^declare -x (.*?)="(.*[^\\])"$/ ) {
 		    $params{$1} = $2 unless $1 eq '_';
@@ -2925,6 +2930,10 @@ sub get_params() {
 	    #
 	    # getparams was interpreted by dash/ash/busybox
 	    #
+	    # - Variable name preceded by 'export '
+	    # - Param values are delimited by single quotes.
+	    # - Embedded single quotes are transformed to the five characters '"'"'
+	    #
 	    for ( @params ) {
 		if ( /^export (.*?)='(.*'"'"')$/ ) {
 		    $params{$variable=$1}="${2}\n";