This is documentation for Mathematica 8, which was
based on an earlier version of the Wolfram Language.
View current documentation (Version 11.2)


This function has not been fully integrated into the long-term Mathematica system, and is subject to change.
is an option for selections that specifies the thickness in printer's points of line-spanning characters such as \[VerticalLine] and \[HorizontalLine].
  • With the default setting SpanLineThickness->Automatic, the thickness of line-spanning characters is set to an appropriate default value.
  • With the setting SpanLineThickness->k, the thickness of a line-spanning character is k times its thickness in the default font.
New in 4.0