# Charts – Common Properties

All charts share the following common properties:

- Content: Used to pass the data that will be charted. The property must be set to a DataSet Data Type, either through binding the Content property to a DataSet tag or WebPage Elements Event Handler Scripts. When the data is updated, the chart will be re-evaluated and redrawn.

  Note: See the WebPages HMI Scripting topic for information regarding the differences between using the DataSet as a tag or as an Event Handler script.

- Show Legends: Determines whether or not the chart legend will be displayed with the chart when the project is in Test Mode or deployed. When enabled, while the project is in Test Mode or deployed, if a user hovers over the chart with the mouse cursor, the legend will display information about the chart in relation to the placement of the mouse, as shown below. This setting is enabled by default.

  Bar Chart Legend | Pie Chart Legend
  Trend Chart Legend | Scatter Plot Legend

- Visible Columns: Determines which columns will be displayed in the chart. By leaving this property blank, all the available columns in the DataSet will be displayed by default. To select specific columns to be displayed, enter the column name. If adding multiple columns, a semicolon must be placed between each column name (e.g. X ; Y ; Height ; Width).