docs: clarity on table key

Author: sean-freeman

README.md

@@ -29,7 +29,9 @@ Therefore it is not possible to match precisely the same functionality when boot
 
 In addition, dependant upon the additional configuration and policies within an existing configured environment - these Terraform Modules for SAP may not work at all and may require custom changes to fit the bespoke environment.
 
-Contributions to these Terraform Modules need to retain as much parity across each infrastructure platform.
+For further information, please see below for the [Infrastructure provisioning parity comparison](#infrastructure-provisioning-parity-comparison) table.
+
+N.B. Contributions to these Terraform Modules need to retain as much parity across each infrastructure platform. 
 
 ## Execution time
 
@@ -42,6 +44,8 @@ Please note, for all SAP software installations the execution time will vary bas
 
 All detailed execution permissions are listed in the documentation for the Terraform Modules of each Infrastructure Platform. See the next section.
 
+---
+
 ## List of Terraform Modules for SAP
 
 The below table lists the Terraform Modules for SAP, and any detailed documentation:
@@ -86,17 +90,17 @@ The below table lists the Terraform Modules for SAP, and any detailed documentat
 | &emsp;&emsp;*Compute*<br/>&emsp;&emsp;*Type* | Virtual Machine<br> (Type 1) | Virtual Machine<br> (Type 1) | Virtual Machine<br> (Type 1) | Virtual Machine<br> (Type 1) | Virtual Machine<br> (Type 1) | Virtual Machine<br> (Type 1) | Virtual Machine<br> (Type 1) |
 | &emsp;&emsp;*Compute*<br/>&emsp;&emsp;*Hypervisor* | KVM | KVM | HyperV | KVM | IBM PowerVM<br> (PHYP LE) | IBM PowerVM<br> (PHYP LE) | VMware vSphere |
 | <br/><br/>***Account Init*** |   |   |   |   |   |   |   |
-| Create Resource Group, or re-use existing Resource Group | :x: | :x: | :white_check_mark: | :white_check_mark: | :white_check_mark: | N/A | N/A |
+| Create Resource Group, or re-use existing Resource Group | :no_entry_sign: | :no_entry_sign: | :white_check_mark: | :white_check_mark: | :white_check_mark: | N/A | N/A |
 | Create VPC/VNet, or re-use existing VPC/VNet | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | N/A | N/A |
 | Create Subnet, or re-use existing Subnet | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | N/A | N/A |
 | Create Many-to-One NAT Gateway (Public Internet access for hosts) | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | N/A | N/A |
 | <br/>***Account Bootstrap<br/>(aka. minimal landing zone)*** |   |   |   |   |   |   |   |
 | Create Private DNS | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | N/A | N/A |
-| Create Network Interconnectivity hub (e.g. Transit Gateway) | :white_check_mark: | :x: | :x: | :white_check_mark: | :white_check_mark: | N/A | N/A |
+| Create Network Interconnectivity hub (e.g. Transit Gateway) | :white_check_mark: | :no_entry_sign: | :no_entry_sign: | :white_check_mark: | :white_check_mark: | N/A | N/A |
 | Create Network Security for Subnet/s (e.g. ACL, NSG) | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | N/A | N/A |
-| Create Network Security for Host/s (e.g. Security Groups) | :white_check_mark: | :x: | :white_check_mark: | :white_check_mark: | :white_check_mark: | N/A | N/A |
+| Create Network Security for Host/s (e.g. Security Groups) | :white_check_mark: | :no_entry_sign: | :white_check_mark: | :white_check_mark: | :white_check_mark: | N/A | N/A |
 | Create TLS key pair for SSH (using RSA algorithm) | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: |
-| Import public key to Cloud platform | :white_check_mark: | :x: | :white_check_mark: | :white_check_mark: | :white_check_mark: | N/A | N/A |
+| Import public key to Cloud platform | :white_check_mark: | :no_entry_sign: | :white_check_mark: | :white_check_mark: | :white_check_mark: | N/A | N/A |
 | <br/>***Account IAM*** |   |   |   |   |   |   |   |
 | Create IAM Access Group/s and contained Policies for SAP 'Basis' Administrators | :x: WIP | :x: WIP | :x: WIP | :warning: WIP | :x: WIP | N/A | N/A |
 | <br/>***Bastion Injection*** |   |   |   |   |   |   |   |
@@ -123,3 +127,9 @@ The below table lists the Terraform Modules for SAP, and any detailed documentat
 | Build scripts for Host:<sub><br>     - Enable root login<br>     - Set hostname<br>     - Set DNS in resolv.conf<br>     - Disks and Filesystem setup (LVM with XFS and striping, or Physical with XFS)</sub> | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: |
 | Build scripts for increased security Hosts:<sub><br>     - Set DNS Proxy in resolv.conf<br>     - Set Web Proxy for non-interactive login shell</sub> | N/A | N/A | N/A | N/A | :white_check_mark: | :white_check_mark: | :white_check_mark: |
 | Build scripts for BYOL OS:<sub><br>     - Enable OS Subscription with BYOL, setup OS Package Repositories</sub> | N/A | N/A | N/A | N/A | :white_check_mark: | :white_check_mark: | :white_check_mark: |
+
+<sub>**Key:**</sub>
+- :white_check_mark: <sub>Ready and Tested</sub>
+- :warning: <sub>Pending work</sub>
+- :x: <sub>Not available yet</sub>
+- :no_entry_sign: <sub>Capability not provided by vendor (or construct concept does not exist)</sub>