> For the complete documentation index, see [llms.txt](https://docs.marpledata.com/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.marpledata.com/docs/marple-insight/user-manuals/analysis/signal-list.md).
# Signal List
Once you have loaded a dataset to your project, you have to select the signals you want to see visualised.
On the left side of the screen you have a list of all the signals.
By default, the signal list will show a dataset's signals. To see a dataset's functions, toggle the switch at the top of the signal list.
## Signal metadata
To see the metadata of a signal, hover over the signal name in the signal list.
For more information on how to setup signal metadata, see: [Database](/docs/marple-insight/user-manuals/database.md#signal-metadata).
## Add signals
To add signals to your plot, double click on the signal, or drag and drop the signal to the plot.
To find a signal, you can use the search box and do a fuzzy search in all available signals. If you make a typo, or do "t" instead of "T", the result will still appear.
Add a signal to your plot by double clicking or dragging and dropping the signal
## Signal List Settings
To change the appearance and organisation of your signal list, click on the settings wheel at the top right of the signal list.
Signal settings
This allows you to:
1. Enable or disable the alphabetical sorting of the signal list;
2. Show or hide the units of the signals;
3. Show the signals in a grouped, and select what sign should be used for the signal groups.