pops up a file browser window, allows the user to select
a file and prints the name of that file to the standard output.
The optional list of patterns gives a list of wildcard patterns
as understood by
the file browser will initially show only files matching one
or more of the patterns. (N.B. patterns must be quoted to
prevent the shell from interpreting them). The following options
gives the initial directory shown by the file browser.
is given as a tk argument to the file browser window.
specifies the title of the file browser window.
command compiles an interactively chosen Limbo source file,
placing the file browser window at a particular spot on the screen
and starting at joe's home directory.