To open an existing database select the "Open..." command from the File
menu. This brings up a file browser where the database name can be
selected. The databases will be listed in a NAME.V notation
(where V is the version number). Double clicking on the database
name will then open this database.
If the program already had a database open it will close it before the new one is opened. If the new database is already in use by gap4 a dialogue will appear warning you that the database has been opened in read only mode. This mode prevents any edits from being made to the database by greying out certain options and disabling the editing capabilities in the contig editor.
A database may also be opened by specifying the database name and
version on the unix command line. To open version 0 of the database
`FRED' use "gap4 FRED.0".