caml-urm

diff --git a/docs.pdf b/docs.pdf
Binary files differ.

diff --git a/urm.mli b/urm.mli
@@ -17,8 +17,8 @@
  The register set, however, is a bit different. In Nigel's specification the
  registers are indexed by natural numbers (starting from 1), while in this
  implementation the registers are indexed by arbitrary integers. Also, in
- Nigel's specification store natural numbers (starting from 0) and in this
- implementation they store arbitrary integers. I have also added the [P]
+ Nigel's specification registers store natural numbers (starting from 0) and in
+ this implementation they store arbitrary integers. I have also added the [P]
  instruction to help users handle negative integers.
 
  @see <https://sites.oxy.edu/rnaimi/home/URMsim.htm> URM simulator. 
@@ -42,7 +42,7 @@ type machine
 (** Returns a machine whose register values are given by a function. *)
 val of_registers : (int -> int) -> machine
 
-(** [register m i] the value of the [i]-th register of [m]. *)
+(** [register m i] returns the value of the [i]-th register of [m]. *)
 val register : machine -> int -> int
 
 (** A machine whose registers are all zeros. *)