Starting with the release of Strategy ONE (March 2024), dossiers are also known as dashboards.
A line chart or line graph is a type of chart which displays information as a series of data points called 'markers' connected by straight line segments. It is a basic type of chart common in many fields. Line charts are most often used to visualize data that changes over time.
If you have a line chart, you can change the look of the data markers to make them easier to distinguish. Some are articles, that talk about these data markers:
It displays information as a series of data points called ‘markers’ connected by straight line segments.
It is similar to a scatter plot except that the measurement points are ordered (typically by their x-axis value) and joined with straight line segments. Line Charts show how a particular data changes at equal intervals of time.

Requirements:
Minimum Strategy version: 10.9
Publisher: Strategy
Installation Instructions:
References:
1. A project in beta by ferdio, (2017, December 4th). Retrieved from http://datavizproject.com/
2. Line Charts, Wikipedia. Retrieved from https://en.wikipedia.org/wiki/Line_chart