Editing Template:Infobox ship begin/testcases (section)

==2021-06-20==
This is a comparison of the live (on the left) and sandbox (on the right) versions of {{tlx|Infobox ship career}}, {{tlx|Infobox ship characteristics}}, and {{tlx|Infobox ship class overview}}.  The sandbox templates are implemented in [[Module:WPSHIPS utilities/sandbox]].  Shifting to the module removes the redundant html markup; simplifies the markup, and fixes certain anomalies in the markup.  The sandbox infoboxen also implement the requested change to how labels in the infoboxen are rendered; see {{slink|Template_talk:Infobox_ship_begin|Remove_colons,_add_bolding}}.

Aside from the labeling style change, the sandbox infoboxen now detect the use of synonymous parameters:
:<span style="margin-left:1.6em>{{tld|Infobox ship career}}</span>
::<span style="margin-left:3.2em>{{para|Ship struck}} and {{para|Ship stricken}}</span>
::<span style="margin-left:3.2em>{{para|Ship honours}} and {{para|Ship honors}}</span>
:<span style="margin-left:1.6em>{{tld|Infobox ship characteristics}}</span>
::<span style="margin-left:3.2em>{{para|Ship draught}} and {{para|Ship draft}}</span>
::<span style="margin-left:3.2em>{{para|Ship armour}} and {{para|Ship armor}}</span>
When both of a pair of synonymous parameters have assigned values, the sandbox infobox renders the parameters with an error message: {{error-small|has synonymous parameter}}.

The live {{tld|Infobox ship characteristics}} emits {{cl|Pages using infobox ship with both armor and amour}} when those parameters are both used; the other synonymous parameters are not categorized.  The sandbox infoboxen categorize all misuses of synonymous parameters into {{cl|Pages using infobox ship with synonymous parameters}}.