Module 2 · Lesson 4 of 8 · Charting · About 5 minutes
Drawing Tools: Lines, Zones and Keeping Charts Clean
On this page
Before you read: Support and Resistance Zones: How Traders Mark Levels
What you will learn
- What common drawing tools do: horizontal lines, trendlines, rectangles and text notes.
- Why a zone often describes a past reaction better than a single line.
- How chart clutter and hindsight affect what you see.
What do common drawing tools do?
What is the difference between marking a price and marking a time?
Most platforms offer horizontal lines or rays to mark a price, vertical lines to mark a time, trendlines between two points, rectangles for a price and time area, and text or callout notes. Measuring tools show the distance between two points in price, percent, bars and time. Fibonacci tools apply fixed ratios, covered in the Fibonacci lesson. Drawings are your own marks; they are not data from the market.
Why use zones?
Did price react at exactly 101.25, or somewhere around it?
Past reactions rarely happen at one exact price. A rectangle covering the area where price turned describes that better than a thin line and reminds the reader that the edge is fuzzy. Labeling each drawing with why it was drawn, such as “prior session high”, makes it easier to judge later whether it still matters.
Drawing tools diagram
Illustrative diagram constructed for teaching. Not real market data.
The diagram shows two copies of the same fictional candles, hollow green for up and filled red for down. The left copy has one labeled zone, one prior-high line and one note. The right copy has a dozen unlabeled lines, some of which happen to touch later turns. All values are made up.
Try it on a chart
- Pick the horizontal line from the drawing toolbar on the left and place it on the chart.
- Drag the line to a new price, then select it and delete it.
Charts and quotes are TradingView's data, not ours, and may be delayed.
How can drawings mislead?
Why do charts with many lines often look predictive afterward?
With enough lines, some are likely to line up with later turns by chance, which can feel like evidence after the fact. Old drawings can stay on the chart long after their reason has passed. Some traders delete or hide drawings on a schedule, show each drawing only on the timeframes where it applies, or keep separate layouts for review and for live viewing. Clean charts make it easier to see what is actually there.
What this does not tell you about drawing tools
- Which lines or zones matter in any market.
- Whether price will react at a drawn level.
- The exact tool names on any platform.
- Nothing here suggests any trade.
Check yourself
- Why can a zone describe a past reaction better than a line? Hint: reactions are fuzzy.
- Why do cluttered charts look predictive after the fact? Hint: some lines match by chance.
- What label would help you judge a drawing a week later? Hint: why it was drawn.
Reflect on your own process
- What label does your written process require on each drawing, and when do you review or delete old ones?
- How would you tell, in your journal, a level drawn before a move from one drawn after it?
- What limit on the number of drawings per chart, if any, does your plan set, and why?