-| This document describes the user requirements on the smooth upgrade
- function of the NFVI and VIM with respect to the upgrades of the OPNFV
- platform from one version to another. Smooth upgrade means that the
- upgrade results in no service outage for the end-users. This requires
- that the process of the upgrade is automatically carried out by a tool
- (code name: Escalator) with pre-configured data. The upgrade process
- includes preparation, validation, execution, monitoring and
- conclusion.
-| ==[MT] While it is good to have a tool for the entire upgrade process,
- but it is a challenging task, so maybe we shouldn't require automation
- for the entire process right away. Automation is essential at
- execution.==
-| ==[hujie] Maybe we can analysis information flows of the upgrade tool,
- abstract the basic / essential actions from the tool (or tools), and
- map them to a command set of NFVI / VIM's interfaces.==
+This document describes the user requirements on the smooth upgrade
+function of the NFVI and VIM with respect to the upgrades of the OPNFV
+platform from one version to another. Smooth upgrade means that the
+upgrade results in no service outage for the end-users. This requires
+that the process of the upgrade is automatically carried out by a tool
+(code name: Escalator) with pre-configured data. The upgrade process
+includes preparation, validation, execution, monitoring and
+conclusion.
+
+.. <MT> While it is good to have a tool for the entire upgrade process,
+ but it is a challenging task, so maybe we shouldn't require automation
+ for the entire process right away. Automation is essential at
+ execution.
+
+.. <hujie> Maybe we can analysis information flows of the upgrade tool,
+ abstract the basic / essential actions from the tool (or tools), and
+ map them to a command set of NFVI / VIM's interfaces.