
Scanned space group 
P 
Origin of the coordinate system of the scanned space group 
, , 
Conventional basis vectors of the scanned space group 

Conventional coordinate system of the scanned space group 

Miller indices of a section plane 

Bravais–Miller indices of a section plane 

Miller indices for special orientations with variable parameter 

Orientation of planes defined by Miller or Miller–Bravais indices 

Scanning group for the scanned group and orientation defined by Miller indices 

Shorthand notation for the scanning group 
, , 
Conventional basis vectors of the scanning group 
, 
Conventional basis vectors of the sectional layer groups for a given orientation of the section plane 

Basis vector of the scanning group in the scanning direction 
, , 
Auxiliary basis of a monoclinic scanning group 
s 
Distance of a section plane from the origin P in units of d 

Location of the section plane along the scanning line 

Sectional layer group of a plane with orientation passing through the point 

Shorthand notation for this sectional layer group 

Reference coordinate system for the sectional layer group 

Length of the fundamental region along d in units of d 

Number of planes of a general translation orbit in the interval 
, 
Single domain states 

Ordered domain pair 

Unordered domain pair 

Symmetry group of an ordered domain pair 

Symmetry group of an unordered domain pair 

Domain twin with a central plane of orientation and sidedness defined by Miller indices or by a normal , and location 
, 
Sectional layer group of the central plane under the action of the group and its floating subgroup 
, 
Sectional layer group of the central plane under the action of the group and its floating subgroup 

Symmetry group of the domain twin 

Trivial symmetry operations of the twin 

Nontrivial symmetry operations of the twin 

Sidereversing operations of the twin 

Statereversing operations of the twin 