How do you turn an indicator idea into a written rule?
The short answer
Write the indicator’s name, chart settings, observation, and review record as separate fields. Describe exactly what you intend to record, including an unclear reading. Give the rule a version and a review date. Keep any trading decision within your own complete plan, outside this documentation exercise.
Start with one sentence from your current notes. It might say, “Check the indicator before recording the setup.” Copy that sentence into a draft rule card. Underline the words that leave a choice to memory: which indicator, which chart, when to look, and what counts as checked.
This article gives you a way to rewrite that sentence as a recordkeeping procedure. It does not supply a setup or tell you which reading to trade. If the broader plan is still unwritten, start with writing a trading plan before adding a new rule card.
What belongs in the rule’s description?
The short answer
Give the rule a narrow job that you can describe without an outcome. Name the chart observation you want to record and where that record belongs. Leave the calculation, settings, and interpretation in separate fields, so each part of the card has a specific question to answer.
Use a heading such as “Record the relationship between the selected closing price and the displayed line.” That is the job for the fictional card in this exercise. Replace it with your own observation when you write your card.
Below it, add fields for the instrument, chart interval, session setting, indicator name, input series, and chosen parameters. Copy the labels from your chart rather than supplying a label from memory. Keep a screenshot of the settings beside the card.
If you cannot identify an input, write “unresolved” in that field and add the question to a separate list. Do not quietly fill the blank with a guess. The draft can remain unfinished while you check the documentation.
How do you describe a condition without vague language?
The short answer
Use words that describe the observation you intend to record. Define what you mean by above, below, equal, or unclear for this particular card. State the moment at which you will read the chart. Keep those definitions beside the condition instead of adding them during a later review.
For this fictional exercise, write: “At the selected completed bar, record whether its closing price is above, below, or equal to the displayed line.” Add an unclear category for a missing value, a hidden label, or a chart you cannot read from the saved image.
Do not use “looks strong” as a substitute for the observation. If that phrase matters to your plan, give it its own definition before using it on the card. Leave it out of this exercise until you can explain what you mean.
Notice the boundary of the fictional sentence. It asks for a chart record. It supplies no direction, order, or expected result. This example is illustrative only and does not indicate typical results.
What would a completed record look like?
The short answer
Save the rule version, observation time, selected chart settings, and the category you recorded. Add a short note for anything that remains unresolved. Keep the original image with the entry. Use the same field names on the card and in the journal so you can trace each entry back.
Try the card on a saved chart before including it in your daily routine. Choose an image for the exercise and write a short record in ordinary language:
- Rule version: first draft.
- Observation: closing price above the displayed line.
- Record status: complete.
- Unresolved question: none for this example.
- Attachment: the selected chart image and settings image.
Now imagine that the line’s value is hidden. Make a second fictional entry with “unclear” as the observation and “line value not visible” as the note. Do not turn that missing information into a yes or no.
This example is illustrative only and does not indicate typical results. The exercise ends with a completed record, without a fictional trade or account outcome.
When is a change a new version?
The short answer
Treat a changed condition, setting, observation time, or exception as a proposed revision. Preserve the existing card and date the proposal separately. Write what changed and why you want to review it. Choose a later review time before deciding whether the proposal belongs in your continuing plan.
Keep a small change log beside the card. A proposal might read, “Add a field for the observation time because the current form leaves it blank.” That is a documentation change. Describe it directly without claiming that a new field changes trading results.
For a proposed parameter change, record the old value and the proposed value in separate fields. Do not overwrite the earlier entries. Leave each past entry attached to the rule version used at that time.
For a separate review procedure, read keeping an indicator review’s rules fixed. Keep the scope of today’s task narrow: one readable rule card and its change log.
How do you review whether you followed the card?
The short answer
Read the card alongside the saved entry and image. Ask whether every requested field was completed, whether the observation matches the words you wrote, and whether an exception was recorded openly. Separate a missing record from a disputed interpretation. Write a question wherever the material does not settle the issue.
Finish with a short review note: what was recorded, what was omitted, and what wording needs another look. Avoid turning a single entry into a verdict on yourself. If you skipped the card, say so plainly and preserve the entry as it happened.
At One Purpose Trading, this kind of review belongs to a broader commitment to education and personal accountability. Read about our approach for that context. The immediate task remains small: describe your procedure, keep its record, and leave uncertainty visible.
Trading involves the risk of loss.
Take it with you
- Give each rule card one observation to record.
- Copy settings and labels rather than filling gaps from memory.
- Include an unclear category and a place for unresolved questions.
- Preserve the rule version with each entry.
- Record proposed changes separately before adopting them.
Disclosure
This article is educational content from One Purpose Trading. It is not financial, investment, tax, or legal advice, and nothing here is a recommendation to buy or sell any security or instrument.
Trading involves substantial risk of loss and is not suitable for everyone. You can lose more than your initial investment. Any examples, figures, or scenarios are illustrative only. Results are not typical, and past performance does not guarantee future results.
You are responsible for your own decisions. Trade only with capital you can afford to lose, and consider consulting a licensed professional about your individual situation.