You appear to be using a content revisioning system, attempted to merge two branches, and a conflict arose.

Imagine the following scenario:

Change Joe made         Original file           Change Jane made

...                     ...                     ...
my $newVersion = '1';   my $newVersion = '1';   my $newVersion = '1';
my $oldVersion = "2";   my $oldVersion = "1";   my $oldVersion = "3";
...                     ...                     ...
[download]

The merge tool cannot safely merge those, so it produced the text you're asking about and expects you to resolve the conflict manually.