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The overlay file-in-use feature is an overlay file sharing notification mechanism. Activate the overlay file-in-use feature when you want all users in a project to be notified if they load an overlay file that another user has already loaded. When this feature is in effect, the first user that opens a particular overlay file is considered to be the "owner" of the file. The owner is the only user that can modify that overlay file, that is, there are the only user that can overwrite that file. All other users in the project will be prevented from overwriting the overlay file. They can, however, save their changes using a different overlay file name. Changes by non-owners are only allowed if the actual owner closes the file or exits Petra without updating the overlay file.

The overlay file-in-use feature is an overlay file sharing notification mechanism. Activate the overlay file-in-use feature when you want all users in a project to be notified if they load an overlay file that another user has already loaded. When this feature is in effect, the first user that opens a particular overlay file is considered to be the "owner" of the file. The owner is the only user that can modify that overlay file, that is, there are the only user that can overwrite that file. All other users in the project will be prevented from overwriting the overlay file. They can, however, save their changes using a different overlay file name. Changes by non-owners are only allowed if the actual owner closes the file or exits Petra without updating the overlay file.

This option forces zone database items to all use uppercase text.

This option disables the convergence angle correction for directional wells.  When this option is selected, Petra assumes all directional surveys are oriented to GRID NORTH

Normally, Petra users can save a raster's *.LIC file to any location on a network.  This option forces LIC files into the same location as the raster image.

When this option is selected, Petra will always require the user to enter the external file's reference datum during import.  This can help prevent data from accidentally being loaded with a different reference datum.

This global or public parameter can be used to restrict or limit the maximum number of wells that can be added to a project during a "session" by a user. (note - each time you open a project you are in a new session). For example, if you activate this option and set the limit to 3 new wells, then you can add 3 new wells but when you try to add the 4th new well, a warning message appears and no more wells will be added. If you close and re-open the project, i.e., a new session, you will be able to add 3 more new wells. When you set or change this option, you must close and re-open the project before the changes will take effect. Use this feature with caution as you might wonder why you are unable to add wells to your project. This option could be used to prevent accidentally adding 1000's of wells during an import process when you really only wanted to update wells.