The "Options" menu determines the background behavior of TVF, and is divided into several sections.
The first section deals with file locations. "Fluka Path" is the directory containing the FLUKA executable file (where the FLUKA package was installed), so that TVF will be able to run simulations directly. "Output Path" is the working directory for TVF - the default location to load input files from, or save input files to, as well as view and save FLUKA output files.
The next two options deal with TVF operation. "Confirm Row Deletion?", if checked, will ask the user every time the "Remove Line" command is called whether they are sure the row should be deleted. If row deletions are a common operation, i.e. the user will be deleting numerous rows, it may be quicker to disable the confirmation message.
The second option, "Intelligent Parsing", is more complicated. Like the check performed when loading an input file, if a file is saved or a simulation run, the Intelligent Parser will scan each input line to determine that 1) all commands are correct FLUKA keywords, and 2) all keywords are appropriately matched (if necessary) and in the correct location. An example of this would be if a user accidentally deleted a GEOEND tag, or if a user inserted a non-geometry command within Geometry tags, TVF would locate these errors and notify the user of the potential mistakes.
The final option is for the visual appearance of TVF - clicking the left or right arrow (< or >) will cycle through the list of available window themes.