If you modify any file, your local and remote copies contain
    different data. In this case the changes in your local copy need to be added
    to the remote repository with the operation
    commit. Position the interpreter in the folder with the
    changes you want to send and execute the “commit”
    order as shown in the following example:
svn --username [YOUR_ID] commitIf you want to send the changes only for some of the files,
    you may add their names separated by spaces right after
    commit. If no name is given, the command is applied to the
    folder in which it is executed. Next, an editor appears for you to introduce
    a comment as shown in the following figure.

You do not need to include the date, time or the files you changed, such information is added automatically by Subversion. You must include text explaining to the rest of users that share the folder what changes you are committing.