--- a/doc/interpreter/expr.txi	Fri Mar 23 10:29:45 2018 -0700
+++ b/doc/interpreter/expr.txi	Fri Mar 23 12:38:00 2018 -0700
@@ -141,10 +141,10 @@
 
 For the ordinary and most common case, the number of indices
 (@code{nidx = numel (@var{idx})}) matches the number of dimensions @samp{nd}.
-In this case, each element of @var{idx} corresponds to its respective dimension,
-i.e., @code{@var{idx}(1)} refers to dimension 1, @code{@var{idx}(2)} refers to
-dimension 2, etc.  If @w{@code{nidx < nd}}, and every index is less than the
-size of the array in the @math{i^{th}} dimension
+In this case, each element of @var{idx} corresponds to its respective
+dimension, i.e., @code{@var{idx}(1)} refers to dimension 1,
+@code{@var{idx}(2)} refers to dimension 2, etc.  If @w{@code{nidx < nd}}, and
+every index is less than the size of the array in the @math{i^{th}} dimension
 (@code{@var{idx}(i) < size (@var{array}, i)}), then the index expression is
 padded with @w{@code{nd - nidx}} trailing singleton dimensions.  If
 @w{@code{nidx < nd}} but one of the indices @code{@var{idx}(i)} is outside the
@@ -527,6 +527,7 @@
 actions, such as in the following example:
 
 @cindex figure deletefcn
+
 @example
 @group
 function mydeletefcn (h, ~, msg)
@@ -539,10 +540,11 @@
 @end example
 
 @noindent
-The above will print "Bye!" to the terminal upon the closing (deleting) of the
-figure.  There are many graphics property actions for which a callback function
-may be assigned, including, @code{buttondownfcn}, @code{windowscrollwheelfcn},
-@code{createfcn}, @code{deletefcn}, @code{keypressfcn}, etc.
+The above will print @qcode{"Bye!"} to the terminal upon the closing
+(deleting) of the figure.  There are many graphics property actions for which
+a callback function may be assigned, including, @code{buttondownfcn},
+@code{windowscrollwheelfcn}, @code{createfcn}, @code{deletefcn},
+@code{keypressfcn}, etc.
 
 Note that the @samp{@@} character also plays a role in defining class
 functions, i.e., methods, but not as a syntactical element.  Rather it begins a

--- a/doc/interpreter/external.txi	Fri Mar 23 10:29:45 2018 -0700
+++ b/doc/interpreter/external.txi	Fri Mar 23 12:38:00 2018 -0700
@@ -609,7 +609,7 @@
 will not overflow.
 
 Extreme care is also required when using the @code{elem} method or the
-@qcode{()} operator which perform essentially the same function.  The reason is
+@code{()} operator which perform essentially the same function.  The reason is
 that if a sparse object is non-const, then Octave will assume that a request
 for a zero element in a sparse matrix is in fact a request to create this
 element so it can be filled.  Therefore, a piece of code like
@@ -1085,7 +1085,7 @@
 
 There are several functions within Octave that can be useful for the purposes
 of parameter checking.  These include the methods of the @code{octave_value}
-class like @code{is_real_matrix}, @code{is_numeric_type}, etc. (See
+class like @code{is_real_matrix}, @code{is_numeric_type}, etc. (see
 @file{ov.h}).  Often, with a knowledge of the Octave m-file language, you can
 guess at what the corresponding C++ routine will.  In addition there are some
 more specialized input validation functions of which a few are demonstrated

--- a/doc/interpreter/func.txi	Fri Mar 23 10:29:45 2018 -0700
+++ b/doc/interpreter/func.txi	Fri Mar 23 12:38:00 2018 -0700
@@ -670,7 +670,7 @@
 without adding extra logic to avoid printing the message if the vector
 does contain a nonzero element.
 
-@deftypefn {Keyword} {} return
+@deftypefn {} {} return
 When Octave encounters the keyword @code{return} inside a function or
 script, it returns control to the caller immediately.  At the top level,
 the return statement is ignored.  A @code{return} statement is assumed

--- a/doc/interpreter/plot.txi	Fri Mar 23 10:29:45 2018 -0700
+++ b/doc/interpreter/plot.txi	Fri Mar 23 12:38:00 2018 -0700
@@ -719,7 +719,7 @@
 display and is equivalent to @qcode{"none"}.  Note that Octave does not parse
 or validate the text strings when in @qcode{"latex"} mode---it is the
 responsibility of the programmer to generate valid strings which may include
-wrapping sections that should appear in Math mode with '$' characters.
+wrapping sections that should appear in Math mode with @qcode{'$'} characters.
 
 The @qcode{"tex"} option implements a subset of @TeX{} functionality when
 rendering text.  This allows the insertion of special glyphs such as Greek
@@ -1893,8 +1893,8 @@
 @end example
 
 @noindent
-where at the moment that the plot is deleted, the message "Window Deleted" will
-be displayed.
+where at the moment that the plot is deleted, the message
+@qcode{"Window Deleted"} will be displayed.
 
 Additional user arguments can be passed to callback functions, and will be
 passed after the two default arguments.  For example:

--- a/scripts/specfun/gammainc.m	Fri Mar 23 10:29:45 2018 -0700
+++ b/scripts/specfun/gammainc.m	Fri Mar 23 12:38:00 2018 -0700
@@ -72,7 +72,7 @@
 ##
 ## References:
 ##
-## @nospell{M. Abramowitz and I. Stegun},
+## @nospell{M. Abramowitz and I.A. Stegun},
 ## @cite{Handbook of mathematical functions},
 ## @nospell{Dover publications, Inc.}, 1972.
 ##