# Options on the Pens tab of the Trend Object Properties dialog box

The following table shows the options on the Pens tab of the Trend Object Properties dialog box.

Options | Descriptions
--- | ---
Pen Attributes | The Pen Attributes box is a spreadsheet where you can configure the individual attributes for each pen. The pen attributes define how the tag will be represented on the trend chart at runtime. To see all of the available attributes, use the scroll bar at the bottom of the box.
Tag\Expr. name | Specifies a tag or expression whose value will be represented as a pen on the run-time chart. The tag or expression is assigned on the Connections tab.
Color | Specifies the color of the pen line and the labels on the vertical axis. Click in the column to change the color in the color palette.
Visible | Specifies whether the pen is visible or hidden on the trend. Click in the column to toggle the setting.
Width | Specifies the width of the pen line in pixels. The larger the size, the thicker the width. If you select a width other than 1, you cannot change the line style setting.
Type | Specifies how trend lines are plotted on the chart. The available options are: Analog. Plots pen lines using diagonals from one point to the next. Digital. Plots pen lines using only horizontal and vertical lines between points. Full width. Plots a tag's value as a horizontal line that extends across the full width of the chart. The tag moves up and down in the chart as the tag or expression changes.
Style | Specifies the style of the trend line: solid, dashed, dotted, and so on. To use a line style other than a solid line, the line width must be set to 1.
Marker | Specifies the plot symbol for each data point. On the Display tab, if you select Show Only Markers and do not connect data points, only the pens with assigned markers are shown on the trend chart.
Min / Max | Specifies the values represented by the bottom and the top of the chart. Tag values outside of the range determined by the minimum and maximum values might not appear on the chart. To control the minimum and maximum range on the sides of the chart, use the Min/Max Value options on the Y-Axis tab.
Link Data | Select this check box to disable the Min / Max columns and use the assigned tag's minimum and maximum values. If the tag's minimum and maximum values are not available, the columns show question marks. For digital tags, the minimum is 0 and the maximum is 1. For analog tags, specify the minimum and maximum values in the Tags editor.
Data Log Model | Specifies the data log model to use to supply historical data when the trend is first shown or when you scroll back in time. If you accept the default option, None, the trend shows only real time data. Make sure you add the tags to the data log model.
Multiple Pen Edits | Specifies properties for multiple pens.
Clear Selections | Click this button to clear the selected edits in the Multiple Pen Edits spreadsheet.
Apply to Selected Pens | Click this button to apply the multiple pen edits to the pens selected in the Pen Attributes spreadsheet.

## See also

Set up pens for the trend

Apply attributes to multiple pens