diff --git a/docs/mm.1 b/docs/mm.1
index 2244588..c8cc5dc 100644
--- a/docs/mm.1
+++ b/docs/mm.1
@@ -20,51 +20,60 @@ mm
 
 .SH DESCRIPTION
 
-Mm catenates input files and writes them to the start of each output file.
+Catenate input files and write them to the start of each output file or stream.
 
 .SH OPTIONS
 
-Mm, upon receiving the
 .B -a
-option, will open subsequent outputs for appending rather than updating.
-.PP
-The
-.B -i
-option opens a path as an input. Without any inputs specified mm will use
-standard input. Standard input itself can be specified by giving the path '-'.
-.PP
-The
-.B -o
-option opens a path as an output. Without any outputs specified mm will use
-standard output. Standard output itself can be specified by giving the
-path '-'. Standard error itself can be specified with the
+.RS
+Opens subsequent outputs for appending rather than updating.
+.RE
+
 .B -e
-option.
-.PP
-The
+.RS
+Set the output to the standard error.
+.RE
+
+.B -i
+.RS
+Opens a path as an input. Without any inputs specified mm will use the
+standard input.
+.RE
+
+.B -o
+.RS
+Opens a path as an output. Without any outputs specified mm will use the
+standard output.
+.RE
+
 .B -u
-option ensures neither input or output will be buffered.
-.PP
-The
+.RS
+Ensures neither input or output will be buffered.
+.RE
+
 .B -n
-option tells mm to ignore SIGINT signals.
+.RS
+Causes SIGINT signals to be ignored.
+.RE
 
 .SH DIAGNOSTICS
 
 If an output can no longer be written mm prints a diagnostic message, ceases
 writing to that particular output, and if there are more outputs specified,
 continues, eventually exiting unsuccessfully.
-.PP
-On error mm prints a diagnostic message and exits with the appropriate
-sysexits.h(3) status.
+
+When an error is encountered, diagnostic message is printed and the program
+exits with the appropriate sysexits.h(3) status.
 
 .SH BUGS
 
-Mm does not truncate existing files, which may lead to unexpected results.
+Existing files are not truncated, which may lead to unexpected results.
 
 .SH RATIONALE
 
-Mm was modeled after the cat and tee utilities specified in POSIX.
+The cat(1p) and tee(1p) programs specified in POSIX provide equivalent
+functionality. The separation of the two sets of functionality into separate
+APIs seemed unncessary.
 
 .SH COPYRIGHT