prepare additional IOC changes pages

Author: gilesknap

docs/user/index.rst

@@ -20,6 +20,8 @@ side-bar.
             tutorials/create_ioc
             tutorials/dev_container
             tutorials/ioc_changes1
+            tutorials/ioc_changes2
+            tutorials/ioc_changes3
             tutorials/generic_ioc
             tutorials/debug_generic_ioc
             tutorials/test_generic_ioc

docs/user/tutorials/ioc_changes2.rst

@@ -0,0 +1,16 @@
+Changing the Generic IOC
+========================
+
+This tutorial will make a simple change to the Generic IOC ``ioc-adsimdetector``.
+We will also update the IOC instance ``bl01t-ea-ioc-02`` use the new feature of
+the Generic IOC.
+This is a type 2 change from `ioc_change_types`.
+
+We are going to add an additional support module to the Generic IOC and then
+use it to add a new record to the IOC instance to use this new support.
+
+For this exercise all changes will be local so you will not need to make a
+fork of ``ioc-adsimdetector``. The next tutorial will show how to a new
+Generic IOC and we will look at the Generic IOC CI at that time.
+
+TODO: WIP.

docs/user/tutorials/ioc_changes3.rst

@@ -0,0 +1,12 @@
+Making a new Support Module
+===========================
+
+This tutorial will create a new Generic IOC for a new support module. We will
+then create a new IOC Instance that uses this new support module.
+This is a type 3 change from `ioc_change_types`.
+
+This exercise will create a new Stream Device support module that implements
+a very simple ASCII protocol. So simple that we will be able to test it
+by typing into a telnet session.
+
+TODO: WIP.