2019-12-05 15:35 AEST by Arthur Barrett - When testing IntelliJ with EXTNT I noticed that the server identifies it as a 
2.0.x client:
E cvs server: Warning: support for 2.0.x client is deprecated
E cvs server: Upgrade your CVSNT version for better performance and security.
E cvs server: This message can be disabled by the server admin.
ok



15:31:37: S -> server perform verb `Valid-responses' command `E M MT Updated 
Checked-in ok error Clear-static-directory Valid-requests Merged Removed Copy-
file Mod-time Mode Kopt Template Set-static-directory Module-expansion Clear-
sticky Set-sticky New-entry Mbinary EntriesExtra'.
15:31:37: S -> Client compatibility level is 1
15:31:37: S -> Buffer size is 5120
15:31:37: S -> server perform verb `Valid-responses' performed, now send output.
15:31:37: S -> server perform verb `Valid-responses' sent output ok.
15:31:37: S -> server: read a 'server line' from client.
15:31:37: S -> server: read line status = 0 cmd = 'UseUnchanged '.
15:31:37: S -> server perform verb `UseUnchanged' command `'.
15:31:37: S -> server perform verb `UseUnchanged' performed, now send output.
15:31:37: S -> server perform verb `UseUnchanged' sent output ok.
15:31:37: S -> server: read a 'server line' from client.
15:31:37: S -> server: read line status = 0 cmd = 'Argument -S'.
15:31:37: S -> Client is 2.0.x, warn user this is old!, request="Argument".



Not sure why that is...