PGASetEvaluationUpToDateFlag(1) on Linux
The text 53c33a92cd6c, as Debian 8 (Jessie), Debian 7 (Wheezy), Debian 6.0 (Squeeze), Debian 5.0 (Lenny) shipped it. The page shows this text now.
sets the flag associated with a string to PGA_TRUE or PGA_FLASE to indicate whether the evaluate function value is out-of-date or not.