--- a/scripts/plot/draw/fplot.m	Thu Dec 28 21:02:10 2017 -0800
+++ b/scripts/plot/draw/fplot.m	Fri Dec 29 08:41:54 2017 -0800
@@ -37,7 +37,7 @@
 ## to 2e-3 (.2%).
 ##
 ## @var{n} is the minimum number of points to use.  When @var{n} is specified,
-## the maximum stepsize will be @code{@var{xhi} - @var{xlo} / @var{n}}.  More
+## the maximum stepsize will be @code{(@var{xhi} - @var{xlo}) / @var{n}}.  More
 ## than @var{n} points may still be used in order to meet the relative
 ## tolerance requirement.
 ##

--- a/scripts/plot/draw/surfnorm.m	Thu Dec 28 21:02:10 2017 -0800
+++ b/scripts/plot/draw/surfnorm.m	Fri Dec 29 08:41:54 2017 -0800
@@ -46,7 +46,7 @@
 ##
 ## @example
 ## @group
-## mag = sqrt (nx.^2 + ny.^2 + nz.^2);
+## len = sqrt (nx.^2 + ny.^2 + nz.^2);
 ## nx ./= len;  ny ./= len;  nz ./= len;
 ## @end group
 ## @end example