function OpenData(dataName, typeName : str255; useDialog : boolean) : boolean;

Opens the specified data file name.  This function accepts a full path name.  If no filename is given, then the GetFile dialog is displayed.   If useDialog is TRUE, any secondary dialog is displayed.

Returns FALSE if not successful.

File Types:  File type names are as shown in the pop-up menu file list.

Also see:  SaveData  OpenClut  SaveClut  TextOptions  ReadBinaryOptions