.htaccess - difference between RewriteRule ^(.*)$ & RewriteRule (.*)$ -


when moving pages old domain new domain, noticed people added ^and other not in rewriterule

what different between 

rewriterule ^(.*)$ http://mynewdomain.com/$1 [r=301,l]

and

rewriterule (.*)$ http://mynewdomain.com/$1 [r=301,l]

thank you.

it better use start , end anchors (^ , $) wherever possible ^(.*)$ in 2 cases listed both rules behave similar.


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