diff --git a/collects/scribblings/reference/booleans.scrbl b/collects/scribblings/reference/booleans.scrbl
index 5c32a83a9d..0e758c7638 100644
--- a/collects/scribblings/reference/booleans.scrbl
+++ b/collects/scribblings/reference/booleans.scrbl
@@ -3,9 +3,10 @@
 
 @title[#:tag "booleans"]{Booleans and Equality}
 
-True and false are represented by the values @scheme[#t] and
-@scheme[#f], respectively, though operations that depend a boolean
-value typically treat anything other than @scheme[#f] as true.
+True and false @deftech{booleans} are represented by the values
+@scheme[#t] and @scheme[#f], respectively, though operations that
+depend a boolean value typically treat anything other than @scheme[#f]
+as true.
 
 See also: @scheme[and], @scheme[or], @scheme[andmap], @scheme[ormap].
 
diff --git a/collects/scribblings/reference/chars.scrbl b/collects/scribblings/reference/chars.scrbl
index af6341ed57..ddf2d503f8 100644
--- a/collects/scribblings/reference/chars.scrbl
+++ b/collects/scribblings/reference/chars.scrbl
@@ -7,7 +7,7 @@
 
 @guideintro["characters"]{characters}
 
-MzScheme characters range over Unicode scalar values, which includes
+@deftech{Characters} range over Unicode scalar values, which includes
 characters whose values range from @schemevalfont{#x0} to
 @schemevalfont{#x10FFFF}, but not including @schemevalfont{#xD800} to
 @schemevalfont{#xDFFF}.
diff --git a/collects/scribblings/reference/numbers.scrbl b/collects/scribblings/reference/numbers.scrbl
index 9d8ac7df0f..10962ad275 100644
--- a/collects/scribblings/reference/numbers.scrbl
+++ b/collects/scribblings/reference/numbers.scrbl
@@ -9,7 +9,7 @@
 
 @guideintro["numbers"]{numbers}
 
-All numbers are @deftech{complex numbers}. Some of them are
+All @deftech{numbers} are @deftech{complex numbers}. Some of them are
 @deftech{real numbers}, and all of the real numbers that can be
 represented are also @deftech{rational numbers}, except for
 @as-index{@scheme[+inf.0]} (positive @as-index{infinity}),
diff --git a/collects/scribblings/reference/regexps.scrbl b/collects/scribblings/reference/regexps.scrbl
index ff5b3d8915..f9aaeeb423 100644
--- a/collects/scribblings/reference/regexps.scrbl
+++ b/collects/scribblings/reference/regexps.scrbl
@@ -14,14 +14,14 @@
 
 @local-table-of-contents[]
 
-Regular expressions are specified as strings or byte strings, using
-the same pattern language as the Unix utility @exec{egrep} or Perl. A
-string-specified pattern produces a character regexp matcher, and a
-byte-string pattern produces a byte regexp matcher. If a character
-regexp is used with a byte string or input port, it matches UTF-8
-encodings (see @secref["encodings"]) of matching character streams;
-if a byte regexp is used with a character string, it matches bytes in
-the UTF-8 encoding of the string.
+@deftech{Regular expressions} are specified as strings or byte
+strings, using the same pattern language as the Unix utility
+@exec{egrep} or Perl. A string-specified pattern produces a character
+regexp matcher, and a byte-string pattern produces a byte regexp
+matcher. If a character regexp is used with a byte string or input
+port, it matches UTF-8 encodings (see @secref["encodings"]) of
+matching character streams; if a byte regexp is used with a character
+string, it matches bytes in the UTF-8 encoding of the string.
 
 Regular expressions can be compiled into a @defterm{regexp value} for
 repeated matches. The @scheme[regexp] and @scheme[byte-regexp]