 	# Move X units vertically or horizontally
 	move:
 		name: "meta.move.ditroff"
-		match: "([HhVv])\\s*(\\d+)"
+		match: "([HhVv])\\s*(-?\\d+)"
 		captures:
 			1: name: "entity.name.function.ditroff"
 			2: name: "constant.numeric.integer.ditroff"

			
			# Print character by index in current font
			name: "meta.print-character.indexed.ditroff"
			match: "(N)\\s*(\\d+)"
			captures:
				1: name: "entity.name.function.ditroff"
				2: name: "constant.numeric.integer.ditroff"

			},{
				# Set character height or slant
				name: "meta.set-character-property.ditroff"
				match: "\\G([HS]\\S*)(?:\\s+(-?\\d+))?\\s*?(?=$|#)"
				captures:
					1: name: "keyword.device.control.ditroff"
					2: name: "constant.numeric.ditroff"
