Changes for page Guidelines on the Versioning of SDMX Artefacts

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36	36	The criterion for deciding which component is impacted is the severity of the change, i.e. the possibility of maintaining backward and forward compatibility between the different versions of an artefact.
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38		-==== a. Description of backward/forward compatibility ====
	38	+== a. Description of backward/forward compatibility ==
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40	40	Backward compatibility is defined as: An item (e.g. a data message) that was produced and validated with the previous version of an artefact (e.g. a DSD) can still be successfully validated using the newest version of the same artefact. For example, a data message produced and validated with a DSD version 1.1 is still valid against the same DSD (same id and Agency) upgraded to version 1.2.
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...	...	@@ -47,16 +47,17 @@
47	47	* MINOR version when changes are backward but not forward compatible;
48	48	* PATCH version when minor changes (e.g. text clarifications, correction of typos) are both backward and forward compatible.
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50		-**// //**b. Cost-benefit analysis for a major version change
	50	+== **// //**b. Cost-benefit analysis for a major version change ==
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52	52	The cost of imposing a “major” change should be balanced against the benefit of retaining backward compatibility, for example by not deleting codes used in existing data exchanges or by deleting or replacing codes only through a concerted effort of all data exchange partners.
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54		-| |**//c. Synthesis based on the above syntax and criterion//**|
55		-|(% colspan="2" %)**Change SeverityVersion ImpactDescription**|**Example**
56		-|(% colspan="2" %)**Major +.0 Neither** backward **nor** forward compatibility|**1.2 2.0**
57		-|(% colspan="2" %)**Minor N.+ **Backward **but not** forward compatibility|**1.0 1.1**
58		-|(% colspan="2" %)**Patch N.M.+ **Backward **and** forward compatibility|**1.2 1.2.1**
	54	+== c. Synthesis based on the above syntax and criterion ==
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	56	+|(% colspan="2" %)**Change Severity**|**Version Impact**|**Description**|**Example**
	57	+|(% colspan="2" %)**Major**|**+.0**|__**Neither**__ backward __**nor**__ forward compatibility|**1.2 **→**2.0**
	58	+|(% colspan="2" %)**Minor**|**N.+**|Backward __**but not**__ forward compatibility|**1.0 **→**1.1**
	59	+|(% colspan="2" %)**Patch**|**N.M.+**|Backward __**and**__ forward compatibility|**1.2 1.**→**2.1**
	60	+
60	60	=== 4. Types of artefact changes and their versioning impact ===
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62	62	As a general rule insignificant changes (e.g. textual clarifications or typos) will result in an increment of the patch component of the versioning system (i.e. N.M.**+**).