What is diff between Chart, Smart Chart and Layout in METASTOCK?

When I open a chart it is opened from Smart chart, but when I draw my lines etc and save it as SMART CHART, those drawings are carried forward to next Smart chart also?

If i save my drawings on chart as "chart" it is saved only for that chart.

example: Trendlines drawn on sensex chart saved as sensex smart chart are also showing on BHEL Smartchart?.

What is Layout?

I am also not sure, but here is what I think:

Chart is a normal chart.

Smart chart is a chart whose settings/changes are automatically saved. You need not save any changes for a smart chart as the changes are automatically saved.

Layout is an arrangement of multiple charts that can be saved together. If you are studying charts for 10 different indices and don't want to open each chart individually next time, just save the layout. Next time, you can open all 10 charts instantly by opening the layout.

Trendlines are unique to a smart chart.You must have saved your smart chart as the default template and thus the trendlines are getting displayed in other charts too.

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