adds domain clarity to tech details

hugo-gh/content/about/index.md

@@ -10,18 +10,18 @@ menu:
 The sig0namectl project allows decentralised DNS updates by communicating directly with the DNS infrastructure itself. 
 
 
-sig0namectl allows open requests to claim update rights of an unused DNS subdomain on a "first come, first served" basis.
+sig0namectl allows open requests to claim update rights of an unused DNS domain on a "first come, first served" basis.
 
-Once a subdomain is successfully claimed, a claimant can add, update or delete any DNS records <b>at</b> or <b>below</b> the claimed subdomain.
+Once a domain is successfully claimed, a claimant can add, update or delete any DNS records <b>at</b> or <b>below</b> the claimed domain.
 
 
-A claimant can choose to share this update capability fully with any other key holders or choose to share update rights only to just a portion of names (a <i>sub</i>-subdomain) below their claimed subdomain.
+A claimant can choose to share this update capability fully with any other key holders or choose to share update rights only to just a portion of names (a <i>sub</i>-domain) below their claimed domain.
 
 ## Technical Details
 
 To achieve this, sig0namectl uses DNS SIG(0) cryptographic key pairs.
 
-To receive update permissions, public keys are embedded within the DNS fabric at the fully qualified domain name of any subdomain. Private keys are generated by and kept with the claimant.
+To receive update permissions, public keys are embedded within the DNS fabric at the fully qualified domain name of any domain. Private keys are generated by and kept with the claimant.
 
 To submit DNS updates, sig0namectl locally signs and sends DNS update requests using the private key generated by the claimant.