void axnamht(inch) FNTPLT.C Level 1
float inch The height of the characters used in the axis names. The height is given in inches (or cm) on a full-page output. The default height is 0.2 inches.
axnamht() sets the height of the axis names for both axes. You can set them separately by calling xnamht() or ynamht(). axnamht() must be called after page().