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use italics for Loop and update a section header
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docs/operation/algorithm/bolus.md

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## Loop Manual Bolus
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## Recommended Bolus
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Loop will recommend bolus insulin corrections when the eventual glucose is greater than the correction target and the active insulin plus any active 30-minute temporary basal will not be sufficient to cover the predicted excursion above correction target.
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The *Loop* app will recommend bolus insulin corrections when the eventual glucose is greater than the correction target and the active insulin plus any active 30-minute temporary basal will not be sufficient to cover the predicted excursion above correction target.
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These recommendations are not proactively sent to the Loop user through any notification or banner alert; the recommendation is only viewable when the user clicks on the bolus tool. Note that Loop never issues a bolus command automatically while using the default Temp Basal [Dosing Strategy](../../loop-3/settings.md#dosing-strategy); all boluses are initiated by the user unless the [Automatic Bolus](../../loop-3/settings.md#automatic-bolus) dosing strategy is enabled. With automatic bolus enabled, each automatic bolus is limited to 40% of the recommended amount or the maximum bolus setting, whichever is smaller.
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These recommendations are not proactively sent to the *Loop* user through any notification or banner alert; the recommendation is only viewable when the user clicks on the bolus tool. Note that *Loop* never issues a bolus command automatically while using the default Temp Basal Only [Dosing Strategy](../../loop-3/settings.md#dosing-strategy); all boluses are initiated by the user unless the [Automatic Bolus](../../loop-3/settings.md#automatic-bolus) dosing strategy is enabled. With automatic bolus enabled, each automatic bolus is limited to 40% of the recommended amount or the maximum bolus setting, whichever is smaller.
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The recommended bolus calculation is described in [Determine the Recommended Dose](temp-basal.md#determine-the-recommended-bolus){: target="_blank" }, with these exceptions:
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* the insulin contribution from the currently running temporary basal set by Loop is removed or subtracted from the recommended bolus amount, and
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* the insulin contribution from the currently running temporary basal set by *Loop* is removed or subtracted from the recommended bolus amount, and
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* the delta is calculated for the top of the correction range, rather than the average of the correction range.
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### Slow Absorption Time (Extended Bolus)
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* Automatic Bolus: 40% of the recommended amount
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* In effect, this algorithm behavior mimics traditional pump therapy of “extended” or “dual wave” bolusing, but with the benefit of added information about actual carbohydrate absorption effects as time goes by
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Finally, Loop checks that the result of the calculations is below the maximum single bolus the Loop user specified in their settings. If the calculated bolus is less than the maximum single bolus setting, then the recommended bolus will be displayed in Loop’s bolus tool.
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Finally, *Loop* checks that the result of the calculations is below the maximum single bolus the *Loop* user specified in their settings. If the calculated bolus is less than the maximum single bolus setting, then the recommended bolus will be displayed in Loop’s bolus tool.
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!!! info "Bolusing safety feature"
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If the current glucose, or any predicted glucose, falls below the Glucose Safety Limit, Loop will not return a recommended bolus. When the minimum glucose rises above the Glucose Safety Limit, the bolus tool will provide a recommended bolus.
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If the current glucose, or any predicted glucose, falls below the Glucose Safety Limit, *Loop* will not return a recommended bolus. When the minimum glucose rises above the Glucose Safety Limit, the bolus tool will provide a recommended bolus.
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## Algorithm Section Menu
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docs/operation/algorithm/overview.md

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## Loop Algorithm
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## The *Loop* Algorithm
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Loop’s algorithm for adjusting insulin delivery is oriented around making a glucose prediction and modifying delivery to bring that prediction within target range without going below the Glucose Safety Limit. Every five minutes, triggered by new glucose data, it generates a new prediction. Both [bolus recommendations](bolus.md) and [temporary basal rate adjustments](temp-basal.md) are set based on this [prediction](prediction.md).
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|---------|---------|
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|Insulin activity duration|The insulin activity duration is the duration of the insulin activity curve, and describes the point at which the delivered insulin dose no longer affects glucose. The insulin activity duration is 6 hours for Loop's rapid-acting and ultra-rapid insulin models.|
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|Correction range|The correction range is the glucose range Loop uses to determine corrective actions (e.g., between 90 and 120 mg/dL in the figure). NOTE: Loop’s correction range is a user setting and should not be confused with the target range, typically 70-180 mg/dL, used for the purpose of calculating the percent time in range.|
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|Correction range|The correction range is the glucose range *Loop* uses to determine corrective actions (e.g., between 90 and 120 mg/dL in the figure). NOTE: Loop’s correction range is a user setting and should not be confused with the target range, typically 70-180 mg/dL, used for the purpose of calculating the percent time in range.|
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|Correction minimum|The lower or minimum value of the user’s correction range, which is 90 mg/dL in the figure.|
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|Correction maximum|The upper or maximum value of the user’s correction range, which is 120 mg/dL in the figure.|
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|Correction target|The correction target is the average value of the correction range. In the overview figure, this is 105 mg/dL given that the correction minimum is 90 mg/dL and the correction maximum is 120 mg/dL.|
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|Predicted glucose|Loop makes a prediction of glucose values out for a length of time equal to your insulin action duration. The predicted glucose is the basis for how Loop makes its insulin delivery recommendations and actions.|
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|Predicted glucose|Loop makes a prediction of glucose values out for a length of time equal to your insulin action duration. The predicted glucose is the basis for how *Loop* makes its insulin delivery recommendations and actions.|
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|Eventual glucose|The last value of the predicted glucose curve, in other words the very last glucose predicted at the end of your insulin action duration. In the figure above, this is 85 mg/dL.|
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|Minimum predicted glucose|The lowest glucose value at any point in time within the prediction. In the figure above, this is 77 mg/dL.|
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|Delta|The delta is the difference between the eventual glucose and the correction target. In the overview figure, the eventual glucose is 85 mg/dL and the correction target is 105 mg/dL, which means that the delta is -20 mg/dL. |
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|Suspend Threshold (Glucose Safety Limit)|The glucose safety limit (called suspend threshold when this figure was generated) is a safety feature of the Loop algorithm. If any predicted glucose is below this value, the Loop algorithm will issue a temporary basal rate of 0|
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|Suspend Threshold (Glucose Safety Limit)|The glucose safety limit (called suspend threshold when this figure was generated) is a safety feature of the *Loop* algorithm. If any predicted glucose is below this value, the *Loop* algorithm will issue a temporary basal rate of 0|
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|CGM data|Glucose readings made by a continuous glucose monitor.|
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|Insulin sensitivity factor|A configuration value that provides an estimate of how much glucose will drop given a unit of insulin.|
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|Active insulin|Active insulin, often referred to as Insulin-on-Board (IOB), is the remaining amount of insulin activity from boluses and temporary basal rates relative to a user’s scheduled basal rates. More specifically, it is the total amount of insulin activity due to all bolus and basal insulin delivered within the last N hours, where N is determined by the insulin activity duration. The amount of “active” insulin depends upon the insulin activity curve, and also accounts for the insulin withheld via basal suspensions. As such, it is possible that the active insulin can be negative. Negative active insulin will result in an increase in predicted glucose. The active insulin displayed in Loop's main display does not reflect the currently enacted temporary basal rate, as that basal rate may be canceled or modified before completion over the next 30 minutes. In others words, Loop doesn't count chickens before the eggs hatch...insulin delivery must be confirmed before being added to the active insulin reporting.|
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|Active insulin|Active insulin, often referred to as Insulin-on-Board (IOB), is the remaining amount of insulin activity from boluses and temporary basal rates relative to a user’s scheduled basal rates. More specifically, it is the total amount of insulin activity due to all bolus and basal insulin delivered within the last N hours, where N is determined by the insulin activity duration. The amount of “active” insulin depends upon the insulin activity curve, and also accounts for the insulin withheld via basal suspensions. As such, it is possible that the active insulin can be negative. Negative active insulin will result in an increase in predicted glucose. The active insulin displayed in Loop's main display does not reflect the currently enacted temporary basal rate, as that basal rate may be canceled or modified before completion over the next 30 minutes. In others words, *Loop* doesn't count chickens before the eggs hatch...insulin delivery must be confirmed before being added to the active insulin reporting.|
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## Algorithm Section Menu
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