Meta
meta use for define the metadata of this Navi Stream. It just like a doc of this script.
When the script is compiled, you can get the original array value of the specified name from Instance, which is usually used to attach some description information to the metric.
Syntax
nvs
meta {
title = "MACD indicator",
description = "MACD is a trend-following indicator that consists of three lines, namely the fast line, the slow line and the bar line."
author = "Navi Team"
}