#SlowCalc is a special Data Section tag that looks like a cross-sectional function name but is not one.
Specifying #SlowCalc at the beginning of a Data formula tells RealTest to NOT use the faster one-pass formula calculation mode for this formula.
If you have a Data formula that you suspect may be calculating incorrect values, especially around bars with stock splits, try adding this tag to the start of the formula and recalculating it. If the output changes, keep the tag in place, otherwise remove it so the faster calculation speed can remain in use.
See also Split Handling, particularly the example "exponential slope" calculation.
