--- a/doc/interpreter/diffeq.txi	Sun Jan 07 07:20:03 2018 -0800
+++ b/doc/interpreter/diffeq.txi	Sun Jan 07 09:57:32 2018 -0800
@@ -72,7 +72,7 @@
 
   xdot = zeros (3,1);
 
-  xdot(1) = 77.27 * (x(2) - x(1)*x(2) + x(1) \
+  xdot(1) = 77.27 * (x(2) - x(1)*x(2) + x(1) ...
             - 8.375e-06*x(1)^2);
   xdot(2) = (x(3) - x(1)*x(2) - x(2)) / 77.27;
   xdot(3) = 0.161*(x(1) - x(3));
@@ -99,7 +99,7 @@
 
 @example
 @group
-t = [0, logspace(-1, log10(303), 150), \
+t = [0, logspace(-1, log10(303), 150), ...
         logspace(log10(304), log10(500), 150)];
 @end group
 @end example

--- a/doc/interpreter/quad.txi	Sun Jan 07 07:20:03 2018 -0800
+++ b/doc/interpreter/quad.txi	Sun Jan 07 09:57:32 2018 -0800
@@ -81,7 +81,7 @@
 @item @tab quad   @tab Low accuracy with nonsmooth integrands
 @item @tab quadv  @tab Medium accuracy with smooth integrands
 @item @tab quadl  @tab Medium accuracy with smooth integrands.  Slower than quadgk.
-@item @tab quadgk @tab Medium accuracy (@math{1e^{-6}}--@math{1e^{-9}}) with smooth integrands.
+@item @tab quadgk @tab Medium accuracy (1e-6 -- 1e-9) with smooth integrands.
 @item @tab        @tab Handles oscillatory functions and infinite bounds
 @item @tab quadcc @tab Low to High accuracy with nonsmooth/smooth integrands
 @item @tab        @tab Handles oscillatory functions, singularities, and infinite bounds

--- a/libinterp/corefcn/quad.cc	Sun Jan 07 07:20:03 2018 -0800
+++ b/libinterp/corefcn/quad.cc	Sun Jan 07 09:57:32 2018 -0800
@@ -152,7 +152,7 @@
 tolerance.  To choose a relative test only, set the absolute
 tolerance to zero.  To choose an absolute test only, set the relative
 tolerance to zero.  Both tolerances default to @code{sqrt (eps)} or
-approximately @math{1.5e^{-8}}.
+approximately 1.5e-8.
 
 The optional argument @var{sing} is a vector of values at which the
 integrand is known to be singular.

--- a/libinterp/corefcn/quadcc.cc	Sun Jan 07 07:20:03 2018 -0800
+++ b/libinterp/corefcn/quadcc.cc	Sun Jan 07 09:57:32 2018 -0800
@@ -1513,8 +1513,8 @@
 absolute tolerance, and the second element is the desired relative tolerance.
 To choose a relative test only, set the absolute tolerance to zero.  To choose
 an absolute test only, set the relative tolerance to zero.  The default
-absolute tolerance is @math{1e^{-10}} (@math{1e^{-5}} for single), and the
-default relative tolerance is @math{1e^{-6}} (@math{1e^{-4}} for single).
+absolute tolerance is 1e-10 (1e-5 for single), and the default relative
+tolerance is 1e-6 (1e-4 for single).
 
 The optional argument @var{sing} contains a list of points where the integrand
 has known singularities, or discontinuities in any of its derivatives, inside

--- a/scripts/general/dblquad.m	Sun Jan 07 07:20:03 2018 -0800
+++ b/scripts/general/dblquad.m	Sun Jan 07 09:57:32 2018 -0800
@@ -33,7 +33,7 @@
 ## whether infinite bounds are accepted.
 ##
 ## The optional argument @var{tol} defines the absolute tolerance used to
-## integrate each sub-integral.  The default value is @math{1e^{-6}}.
+## integrate each sub-integral.  The default value is 1e-6.
 ##
 ## The optional argument @var{quadf} specifies which underlying integrator
 ## function to use.  Any choice but @code{quad} is available and the default

--- a/scripts/general/quadl.m	Sun Jan 07 07:20:03 2018 -0800
+++ b/scripts/general/quadl.m	Sun Jan 07 09:57:32 2018 -0800
@@ -34,7 +34,7 @@
 ## limits must be finite.
 ##
 ## The optional argument @var{tol} defines the absolute tolerance with which
-## to perform the integration.  The default value is @math{1e-6}.
+## to perform the integration.  The default value is 1e-6.
 ##
 ## The algorithm used by @code{quadl} involves recursively subdividing the
 ## integration interval.  If @var{trace} is defined then for each subinterval