display value
{mpf:env=server_software||@@Apache}
use as conditional section (use with closing token)
{mpf:env=server_port||==80}
... will be returned if server port is 80 ...
{/mpf:env=server_port||==80}
store value in myVar (use as embedded token)
{mpf:set=myVar||{mpf:env=server_port}}
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