Configuration

Most modern computers now have a rich set of fonts that include subscripts, superscripts and a range of mathematical symbols. By default, Regina will use these symbols to make its display easier to read (e.g., subscripts when describing abelian groups, or superscripts when describing group presentations).

If you cannot read these symbols on your machine (e.g., the subscripts and superscripts are too hard to read, or the fonts do not provide these symbols at all), then you can uncheck this option. This will cause Regina to use “plain” ASCII symbols only, which are supported on every machine.

If checked, Regina will ask for confirmation whenever you try to enumerate normal surfaces without selecting embedded surfaces only. Regina asks for confirmation because non-embedded surfaces are typically much slower to generate, far more numerous, and Regina only offers very basic support for them.

If checked, Regina will label each node in the dual graph of a triangulation with the number of the corresponding top-dimensional simplex.

Specifies how many steps a packet moves through the tree when you select Packet Tree→Move→Jump Up or Packet Tree→Move→Jump Down. See moving packets around for further details.

Specifies how Regina encodes international characters when importing or exporting data. International characters are letters or symbols not found on a typical English keyboard.

If you are not sure what to use, the default encoding UTF-8 is a good choice (this is a modern standard and can represent all languages). If you only ever use plain English letters and symbols, you do not need to worry about encodings at all.

For more information on text encodings, see imports and exports.

If checked, Regina will show a link to the Getting Started dialog at the bottom of the main window each time Regina starts.

You can view this information at any time by selecting Help→Getting Started from the menu.