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 # NQPTP – Not Quite PTP
 Briefly, `nqptp` monitors timing data from any [PTP](https://en.wikipedia.org/wiki/Precision_Time_Protocol) clocks – up to 32 – it sees on ports 319 and 320. It maintains records for each clock, identified by Clock ID and IP.
 
-Information about the *master clock* is provided in a [POSIX shared memory](https://pubs.opengroup.org/onlinepubs/007908799/xsh/shm_open.html) interface at `/nqptp`. 
-
 A timing peer list can be sent to `nqptp` over port 9000. The list consists of the letter `T` followed by a space-separated list of the IP numbers of the timing peers. The list replaces any existing timing peer list.
 
+Information about the timing peer list's *master clock* is provided via a [POSIX shared memory](https://pubs.opengroup.org/onlinepubs/007908799/xsh/shm_open.html) interface at `/nqptp`. 
+
 
 Here are details of the interface:
 ```c
@@ -21,6 +21,19 @@ struct shm_structure {
 ```
 
 # Installation
+
+#### Please use `git`!
+As you probably know, you can download the repository in two ways: (1) using `git` to clone it  -- recommended -- or (2) downloading the repository as a ZIP archive. Please us the `git` method. The reason it that when you use `git`,
+the build process can incorporate the git build information in the version string you get when you execute the command `$ nqptp -V`.
+This will be very useful for identifying the exact build if you are making comments or bug reports. Here is an example:
+```
+Version with git build information:
+Version: 1.1-dev-24-g0c00a79. Shared Memory Interface Version: 5.
+
+Version without git build information:
+Version: 1.1-dev. Shared Memory Interface Version: 5.
+```
+### Build and Install
 ```
 $ git clone git@github.com:mikebrady/nqptp.git
 $ cd nqptp