diff -r 2ac59242d0cb -r e4558df9ba2d src/CLIParser.h
--- a/src/CLIParser.h	Tue May 07 21:25:45 2019 +0200
+++ b/src/CLIParser.h	Tue May 07 21:33:59 2019 +0200
@@ -67,6 +67,7 @@
 	static const string_t OPTION_BEFORE_RECORDS;
 	static const string_t OPTION_AFTER_RECORDS;
 	static const string_t OPTION_FOR_EACH;
+	static const string_t OPTION_DROP;
 	static const string_t OPTION_DEFINE;
 
 	Configuration parse(const std::vector<string_t>& arguments) {
@@ -79,6 +80,7 @@
 			if (option == OPTION_BEFORE_RECORDS) currentRelation.awkBeforeRecords = readNext(arguments, i);
 			else if (option == OPTION_AFTER_RECORDS) currentRelation.awkAfterRecords = readNext(arguments, i);
 			else if (option == OPTION_FOR_EACH) currentRelation.awkForEach = readNext(arguments, i);
+			else if (option == OPTION_DROP) currentRelation.drop = true;
 			else if (option == OPTION_INPUT_ATTRIBUTES_APPEND) currentRelation.inputAttributesAppend = true;
 			else if (option == OPTION_INPUT_ATTRIBUTES_PREPEND) currentRelation.inputAttributesPrepend = true;
 			else if (option == OPTION_RELATION) {
@@ -114,6 +116,7 @@
 const string_t CLIParser::OPTION_BEFORE_RECORDS = L"--before-records";
 const string_t CLIParser::OPTION_AFTER_RECORDS = L"--after-records";
 const string_t CLIParser::OPTION_FOR_EACH = L"--for-each";
+const string_t CLIParser::OPTION_DROP = L"--drop";
 const string_t CLIParser::OPTION_DEFINE = L"--define";
 
 }