Well, seeing as I myself have seen a lot of threads about people asking how to put avatars, dates, etc on templates I decided to paste together the uCoz common codes.
Let's start shall we,
This is used to show the username you have chosen, The one you have logged in with. For example, if you have logged in with the name uCoz, $USERNAME$ will show uCoz.
This is used to show your avatar where it is placed, This is used by the means of Image tags.
<img src="$USER_AVATAR_URL$" border="0">
If you want to show someone elses avatar you would need to change
This pretty much explains itself. This is used in the manner of a hyperlink
<a href="$HOME_PAGE_LINK$">The name of the hyperlink</a>
This links you back to the homepage www.yoursite.ucoz.com
$LOGIN_FORM$ is used for a Login form, This is basically used as a form so a Guest can login to his/her account.
Used as a hyperlink
Used the same way as the $LOGIN_LINK$ but logs you out instead of logging you in.
$PERSONAL_PAGE_LINK$ Is another self explaining code. Used as a hyperlink and links you to your Profile.
$REGISTER_LINK$ is used as a hyperlink and links to the Registration Page.
Displays the $SITE_MENU$ where you want it. (Where you put it)
Displays the $SITE_NAME$ (Able to edit through Common Settings Admin Bar > Settings > Common Settings > Name Of Your Site:
If you want anymore please reply with the code and I will add it.