Given an Interactive Trading Chart or Trading Chart that is displaying a CandleStick Chart is it possible to draw points or lines or curves over it, as, for instance, indicators do. 1) For instance, I want to draw some points on the chart (such as the peaks of the Candlesticks) or create lines to draw on the chart or curves on the chart. 2), I want to create my own indicators. Is there a set of specifications that an Indicator must satisfy? My indicator would be a time series that might have value for every trading day or have sparse values, meaning values available for only certain days, It would be great if I could get some example code to answer 1). Something like placing a few points (at certain dates) on the Interactive Trading Chart. The indicator would be a time series. Thanks in advance.