docs: fixed formatting of many manpages

docs/intcmp.1

@@ -1,5 +1,5 @@
 .\" Copyright (c) 2023–2024 DTB <trinity@trinity.moe>
-.\" Copyright (c) 2023 Emma Tebibyte <emma@tebibyte.media>
+.\" Copyright (c) 2023–2024 Emma Tebibyte <emma@tebibyte.media>
 .\"
 .\" This work is licensed under CC BY-SA 4.0. To see a copy of this license,
 .\" visit <http://creativecommons.org/licenses/by-sa/4.0/>.
@@ -13,7 +13,7 @@ intcmp \(en compare integers
 .SH SYNOPSIS
 
 intcmp
-.RB ( -eghl )
+.RB ( -egl )
 .RB [ integer ]
 .RB [ integer... ]
 
@@ -23,35 +23,52 @@ Intcmp compares integers.
 
 .SH USAGE
 
-The -e option permits given integers to be equal to each other. If combined
-with -g or -l, only adjacent integers in the argument sequence can be equal.
-.PP
-The -g option permits a given integer to be greater than the following integer.
-.PP
-The -l option permits a given integer to be less than the following integer.
-.PP
+.B -e
+.RS
+Permits given integers to be equal to each other. If combined with
+.B -g
+or
+.B -l
+, only adjacent integers in the argument sequence can be equal.
+.RE
+
+.B -g
+.RS
+Permits a given integer to be greater than the following integer.
+.RE
+
+.B -l
+.RS
+Permits a given integer to be less than the following integer.
+.RE
+
+.SH EXAMPLES
+
 It may help to think of the -e, -g, and -l options as equivalent to the
 infix algebraic “=”, “>”, and “<” operators respectively, with each option
-putting its symbol between every given integer. For example,
+putting its symbol between every given integer. The following example is
+equivalent to evaluating “1 < 2 < 3”:
+
+.RS
 .R intcmp -l 1 2 3
-is equivalent to evaluating "1 < 2 < 3".
+.RE
 
 .SH DIAGNOSTICS
 
 Intcmp exits 0 for a valid expression and 1 for an invalid expression.
-.PP
-Intcmp prints a debug message and exits with the appropriate sysexits(3) error
+
+Intcmp prints a debug message and exits with the appropriate sysexits.h(3) error
 code in the event of an error.
 
 .SH BUGS
 
 There are multiple ways to express compound comparisons; “less than or equal
 to” can be -le or -el, for example.
-.PP
+
 The inequality comparison is -gl or -lg for “less than or greater than”; this
 is elegant but unintuitive.
-.PP
--egl, "equal to or less than or greater than", exits 0 no matter what for valid
+
+-egl, “equal to or less than or greater than”, exits 0 no matter what for valid
 program usage and may be abused to function as an integer validator.
 Use str(1) instead.