PointsAndLines is now obsolete.
Since Version 5.0 (released in 2003), ConstrainedMax has been superseded by Minimize, Maximize, NMinimize, and NMaximize.
Since Version 5.0 (released in 2003), ConstrainedMin has been superseded by Minimize, Maximize, NMinimize, and NMaximize.
As of Version 6.0, FactorComplete has been superseded by FactorInteger[n, All] and FactorInteger[n, Automatic].
Since Version 3.0 (released in 1996), LegendreType has been superseded by additional arguments to LegendreP and LegendreQ.
Since Version 3.0 (released in 1996), Subscripted has been superseded by RowBox, SubscriptBox, etc.
PathConditionGraph is obsolete. This functionality is no longer supported in Combinatorica.
As of Version 6.0, ConversionOptions is superseded by capabilities in Import and Export.
Since Version 3.0 (released in 1996), LinkOpen has been superseded by LinkCreate, LinkConnect, and LinkLaunch.
Since Version 5.0 (released in 2003), LUBackSubstitution has been superseded by LinearSolveFunction.