--- a/relpipe-data/makra/unix.xsl	Mon Nov 26 12:15:40 2018 +0100
+++ b/relpipe-data/makra/unix.xsl	Mon Nov 26 18:56:21 2018 +0100
@@ -13,7 +13,7 @@
 
 	<xsl:template match="m:unix[@tvar = 'oboje']">*NIX (formerly UNIX, now mostly GNU/Linux)</xsl:template>
 	<xsl:template match="m:unix[@tvar = 'zkratka']"><abbr title="formerly UNIX, now mostly GNU/Linux">*NIX</abbr></xsl:template>
-	<xsl:template match="m:unix[@tvar = 'vysvětlivka']">formerly UNIX, now mostly GNU/Linux</xsl:template>
+	<xsl:template match="m:unix[@tvar = 'vysvětlivka']">formerly UNIX, now mostly <a href="https://www.gnu.org/">GNU/Linux</a></xsl:template>
 	<xsl:template match="m:unix">*NIX</xsl:template>
 
 </xsl:stylesheet>