Due to the complex inner workings of the Notation Package it is helpful to outline some of the more advanced features and structures of the Mathematica front end and how they ...

LayeredGraphPlot[{v i 1 -> v j 1, v i 2 -> v j 2, ...}] generates a layered plot of the graph in which vertex v_ik is connected to vertex v_jk.LayeredGraphPlot[{{v i 1 -> v j ...

Except[c] is a pattern object which represents any expression except one that matches c. Except[c, p] represents any expression that matches p but not c.

p .. or Repeated[p] is a pattern object that represents a sequence of one or more expressions, each matching p. Repeated[p, max] represents up to max expressions matching ...

Shortest[p] is a pattern object that matches the shortest sequence consistent with the pattern p.

Pajek graph language and data format. Commonly used exchange format for graphs. Native format of the Pajek network analysis software. The format name is Slovenian for spider. ...

Null-terminated text strings. Represents an arbitrary number of null-terminated character strings. Stores characters as 8-bit Unicode values.

TGF graph data format. Used for the storage and exchange of graphs. TGF is an acronym for Trivial Graph Format. Stores directed graphs. Stores at most one label per vertex ...

p_1 | p_2 | ... is a pattern object which represents any of the patterns p_i.

_or Blank[] is a pattern object that can stand for any Mathematica expression. _h or Blank[h] can stand for any expression with head h.