Table of Contents

I. Data File Format

abeliangroup - An abelian group

allowstrict - Deprecated: see spanstrict

allowtaut - Deprecated: see spantaut

angleparams - Parameters for an angle structure enumeration

compact (filter) - A constraint on compactness

compact (surface) - Is a normal surface/hypersurface compact?

components - The components of a knot/link diagram

compressingdisc - Does a triangulation contain a compressing disc?

connected - Is a normal surface connected?

connections - The connections between crossings in a knot/link diagram

crossings - The individual crossings in a knot/link diagram

euler (filter) - A constraint on Euler characteristic

euler (surface) - The Euler characteristic of a normal surface

filter - A normal surface filter

filter (combination) - A logical combination surface filter

filter (properties) - A surface filter that uses basic properties

flags - Deprecated: do not use

fundgroup - The fundamental group of a triangulation

group - A group presentation

H1 - The first homology group of a triangulation

H1Bdry - The first homology group of the boundary of a triangulation

H1Rel - The relative first homology group of a triangulation

H2 - The second homology group of a triangulation

haken - Does a triangulation represent a Haken 3-manifold?

hypersurface - A single normal hypersurface in a 4-manifold triangulation

irreducible - Does a triangulation represent an irreducible 3-manifold?

line - Deprecated: see packet (script) for details

op - A single logical operation

orbl (filter) - A constraint on orientability

orbl (surface) - Is a normal surface orientable?

packet - A single packet in a data file

packet (2-dimensional triangulation) - A 2-dimensional triangulation packet

packet (3-dimensional triangulation) - A 3-dimensional triangulation packet

packet (4-dimensional triangulation) - A 4-dimensional triangulation packet

packet (dim-dimensional triangulation) - A dim-dimensional triangulation packet

packet (angle structure list) - An angle structure list packet

packet (container) - A container packet

packet (link) - A knot/link packet

packet (normal surface list) - A normal surface list packet

packet (normal hypersurface list) - A normal hypersurface list packet

packet (PDF) - A PDF packet

packet (script) - A script packet

packet (SnapPea triangulation) - A SnapPea triangulation packet

packet (surface filter) - A surface filter packet

packet (text) - A text packet

params - Parameters for a normal surface/hypersurface enumeration

pent - A single pentachoron in a 4-dimensional triangulation

pentachora - The pentachora forming a 4-dimensional triangulation

pdf - An encoded PDF document

realbdry (filter) - A constraint on real boundary

realbdry (surface) - Does a normal surface/hypersurface have real boundary?

reginadata - An entire Regina data file

reln - A relation in a group presentation

simplex - A single top-dimensional simplex in a dim-dimensional triangulation

simplices - The top-dimeinsional simplices that form a dim-dimensional triangulation

snappea - The full contents of a SnapPea data file

solidtorus - Does a triangulation represent the solid torus?

spanstrict - Does an angle structure list span a strict structure?

spantaut - Does an angle structure list span a taut structure?

splitsfce - Does a triangulation have a splitting surface?

struct - A single angle structure

surface - A single normal surface in a 3-manifold triangulation

tag - An individual packet tag

tet - A single tetrahedron in a 3-dimensional triangulation

tetrahedra - The tetrahedra forming a 3-dimensional triangulation

text - An arbitrary amount of text

threeball - Does a triangulation represent the 3-dimensional ball?

threesphere - Does a triangulation represent the 3-sphere?

triangle - A single triangle in a 2-manifold triangulation

triangles - The triangles forming a 2-manifold triangulation

turaevviro - Deprecated: do not use

twosided - Is a normal surface two-sided?

txi - Does a triangulation represent the product of the torus with an interval?

var - A single script variable

zeroeff - Is a triangulation 0-efficient?