This box contains a list of currently enabled import types. This is same list that appears in the "Files of Type" combo box when prompted for which file to import after selecting File - Open or File - Insert File. You can add multiple entries of the same file format, each with different options set. You can also remove any formats you do not normally use.
Options
This button pops up the option dialog corresponding to the specific format entry you had selected in the format list. It will be disabled if there are no options available for the type you have selected. The following is a list of available import formats which have a corresponding Import Options dialog. For a complete list of available Import Formats, see Importing Data.
This button pops up the Coordinate Transformation tabbed dialog which allows you to set rotation, shift and scale parameters as well as set geodetic transformation parameters. See Rotate/Translate/Scale Dialog and Projection Transformation dialog for more information. It will be disabled if coordinate transformations are unavailable during import of the selected file type.
File Extensions
This button pops up the File Extensions dialog which allows you to modify the file extensions associated with this import type. It will be disabled if file extension modification is unavailable for the currently selected file type.
Option Files
All of the option types that appear on the list are saved to the default NORMAL.IOP file. You also can store your own sets of formats in other IOP files on your hard drive.
Save As Default
This will save all option types to the default configuration file (NORMAL.IOP).
Save As
This will prompt you for a file path and name to write the current list of option types to that IOP file. Note: the export options will be saved to the file also.
Open
This will prompt you for an IOP filename and path to replace the current list of options with the options from that file. Note: the export options will be opened also.
Merge
This will load options from an external IOP file and not overwrite any that have the same description. Only option types having a description that is not in the current option list will be added to the option list. Note: only import options will be merged. Export options will remain unchanged.
Items
Add
Allows you to create a new import specification of one of above file types with your own customized options. You can create multiple import specifications for the same file type, each with different options set.
Remove
This will permanently remove the import specification from the option list. The option will no longer appear on the Files of Type area when selecting the File - Open and File - Insert File menus. To recreate any options that have been removed, you'll need to click the Add button.
Shift Up and Shift Down
Allows you to organize the options so the ones used most frequently will appear at the top of the Files of Type combo box when prompted for a filename while inserting files.