Free code and documentation

• MathXLS: exchange Excel data with Mathematica (trial version)
• FourColorTheoremGame.nb : A Mathematica game concerning the four color theorem (english version)
• VierFarbenSpiel.nb : A Mathematica game concerning the four color theorem (in german)
• oldfc Old FeynCalc 1.0 manuals and FeynCalc2.2 program
• fcrefguide The 1999 FeynCalc 3.0.5.1 manual with postscript versions
• Tarcer : a program for special integrals