| For the Series as a Whole | 
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|  | Std (i.e. Standard) | The general-purpose-handicap (GPH) as deduced from initial registration | 
|  | (PHRF) | The rating from which the standard handicap was derived (otherwise unused) | 
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|  | C | Continuing with prior years' rolling handicapping? (✓Yes / ✗No) | 
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| With Results from Before the Race | 
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|  | Imputed | Imputed (or seeded) handicaps for a moving-window average | 
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|  | Ⓟ | Rapid convergence phase countdown ❾ ❽ ❼ ❻ ❺ ❹ ❸ ❷ ❶ 🚀 | 
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|  | Entrained | Several walking handicaps interspersed with imputed handicaps | 
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| For this Race or an Upcoming Race | 
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|  | Bf (i.e. Before) | Computed rolling handicap as suitable for an upcoming race | 
|  | (mm:ss) | The same rolling handicap in minutes and seconds per mile | 
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|  | ΔBf | Differences in rolling handicap for reckoning time allowances | 
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