diff --git a/docs/rpn.1 b/docs/rpn.1
index 74642f8..506b3c9 100644
--- a/docs/rpn.1
+++ b/docs/rpn.1
@@ -21,16 +21,16 @@ Rpn parses and and evaluates reverse polish notation expressions either from the
 standard input or by parsing its arguments. See the STANDARD INPUT section.
 
 Upon evaluation, rpn will print the resulting number on the stack to the
-standard output. Any further specified numbers will be placed on the stack
-following the last outputted number.
+standard output. Any further specified numbers will be placed at the end of the
+stack.
 
 For information on for reverse polish notation syntax, see rpn(7).
 
 .SH STANDARD INPUT
 
-If rpn is passed arguments, it interprets them as an expression to be evaluated.
-Otherwise, it reads whitespace-delimited numbers and operations from the
-standard input.
+If arguments are passed to rpn, it interprets them as an expression to be
+evaluated. Otherwise, it reads whitespace-delimited numbers and operations from
+the standard input.
 
 .SH DIAGNOSTICS
 
@@ -42,13 +42,14 @@ as defined by sysexits.h(3) and print an error message.
 Due to precision constraints and the way floats are represented in accordance
 with the IEEE Standard for Floating Point Arithmetic (IEEE 754), floating-point
 arithmetic has rounding errors. This is somewhat curbed by using the
-second-highest float that can be represented in line with this standard to round
-numbers to before outputting.
+machine epsilon as provided by the Rust standard library to which to round
+numbers. Because of this, variation is expected in the number of decimal places 
+rpn can handle based on the platform and hardware of any given machine.
 
 .SH RATIONALE
 
 An infix notation calculation utility, bc(1p), is included in the POSIX
-standard, but it doesn’t accept expressions as arguments; in scripts, any
+standard, but does not accept expressions as arguments; in scripts, any
 predefined, non-interactive input must be piped into the program. A dc(1)
 pre-dates the standardized bc(1p), the latter originally being a preprocessor
 for the former, and was included in UNIX v2 onward. While it implements reverse