This is a callout marker. Like all ChartIQ markers, the object itself is managed by the chart, so when you scroll the chart the object moves with you. It is also destroyed automatically for you when the symbol is changed. This is an example of a complex marker which can contain html, video, images, css, and animations.
Indices are designed to be broad measures of performance of an asset class or a subset of that asset class. So that indices are widely adopted, the methodology used to create an index is often published to give stakeholders an understanding of how decisions governing index calculation are made.
A database index is a data structure that improves the speed of data retrieval operations on a database table at the cost of additional writes and storage space to maintain the index data structure. Indexes are used to quickly locate data without having to search every row in a database table every time a database table is accessed. Indexes can be created using one or more columns of a database table, providing the basis for both rapid random lookups and efficient access of ordered records. An i