You might want to learn how to use this BBS. You can select 'Show topics form the last xx days' in the drop-down menu in the upper right corner of the BBS. Also, you could use the kiXtart BBS Search, also a link in the upper right corner.
Oh, and just typing in 'workstation lock' in the KiXtart BBS Search lead me directly to your previous post at http://www.kixtart.org/board/ultimatebb.php?ubb=get_topic;f=2;t=004142
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There are two types of vessels, submarines and targets.
