--- ray/doc/ray.1	2023/11/17 20:02:07	1.43
+++ ray/doc/ray.1	2023/12/12 20:12:47	1.44
@@ -1,4 +1,4 @@
-.\" RCSid "$Id: ray.1,v 1.43 2023/11/17 20:02:07 greg Exp $"
+.\" RCSid "$Id: ray.1,v 1.44 2023/12/12 20:12:47 greg Exp $"
 .\" Print using the -ms macro package
 .DA 11/13/2023
 .LP
@@ -1209,7 +1209,7 @@ mod spectrum id
 .DE
 The first two real arguments indicate the extrema of the
 spectral range in nanometers.
-Subsequent real values correspond to multipliers in at each wavelength.
+Subsequent real values correspond to multipliers at each wavelength.
 The nmA wavelength may be greater or less than nmB,
 but they may not be equal, and their ordering matches
 the order of the spectral values.
@@ -1255,7 +1255,7 @@ mod specfunc id
 .DE
 Like the spectrum primitive, the wavelength range is specified
 in the first two real arguments, and additional real values are
-accessible to the sval function.
+set in the evaluation context.
 This function is fed a wavelenth sample
 between nmA and nmB as its only argument,
 and it returns the corresponding spectral intensity.