Method code for $lag_watcher.update()

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---

arg lag;

// Called by .pulse() every 15 minutes
if (type(lags) != 'list)
    lags = [];
while (lags.length() > 9)
    lags = lags.delete(1);
lag = lag > 15 ? lag - 15 : 0;
lags += [lag];

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// Created 27-Mar-1995 as a part of ColdCore, see: @help Credit