$ cvs checkout project_name
cvs checkout: Updating project_name
		

checkout before

cvs checkout -r release_1_0 project_name

$ cvs checkout -r release_1_0 project_name
cvs checkout: Updating project_name
U project_name/file
cvs checkout: Updating project_name/dir1
U project_name/dir1/file1
cvs checkout: Updating project_name/dir2
U project_name/dir2/file1
U project_name/dir2/file2