How to use in-sentence of “Default value”:
+ The default value is.
+ You can specify a default value if yesno receives input other than that listed above.
+ Thus a default value for the width of the image can be fed as the second or third parameter.
+ The default value is “none”.
+ Use only when it is necessary to reduce the size of the above image from its default value of 120px.
+ If a particular parameter is given the same default value across the whole page, then that value could be easily changed, in a text editor, by a global search-and-replace string substitution, to change the default value to some other value, for testing each case.
+ The MediaWiki parameter default function doesn’t return the default value for empty parameters.
