What don't you understand in that code?
Code:
If user has g_access_make_human admin flag(s) AND user is alive
if ( LibraryExists(LIBRARY_NEMESIS, LibType_Library)=true AND zp_class_nemesis_get(player)=true ) use "CLASS_NEMESIS", otherwise use "CLASS_ZOMBIE" to format "%s \r[%L]" string.
else
if ( LibraryExists(LIBRARY_NEMESIS, LibType_Library)=true AND zp_class_nemesis_get(player)=true ) use "CLASS_NEMESIS" other wise use "CLASS_ZOMBIE" to format "\d%s [%L]" string
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