condition.context.isProduction ViewHelper <vhs:condition.context.isProduction> 

Context: IsProduction 

Returns true if current root application context is production otherwise false. If no application context has been set, then this is the default context.

Note about how to set the application context 

The context TYPO3 CMS runs in is specified through the environment variable TYPO3_CONTEXT. It can be set by .htaccess or in the server configuration

See: http://docs.typo3.org/typo3cms/CoreApiReference/ApiOverview/Bootstrapping/Index.html#bootstrapping-context

Arguments 

then 

DataType
mixed
Required
false
Description
Value to be returned if the condition if met.

else 

DataType
mixed
Required
false
Description
Value to be returned if the condition if not met.