This is documentation for Mathematica 6, which was
based on an earlier version of the Wolfram Language.
View current documentation (Version 11.2)
Built-in Mathematica Symbol


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