TraceForward is an option for Trace and related functions which specifies whether to include later expressions on the evaluation chain that contains the pattern form sought.
If you want to do simple operations on Mathematica notebooks, then you will usually find it convenient just to use the interactive capabilities of the standard Mathematica ...
TraceBackward is an option for Trace and related functions which specifies whether to include preceding expressions on the evaluation chain that contains the pattern form ...
The symbolic language paradigm of Mathematica takes the concept of variables and functions to a new level. In Mathematica a variable can not only stand for a value, but can ...
$RecursionLimit gives the current limit on the number of levels of recursion that Mathematica can use.
ReturnPacket[expr] is a MathLink packet that contains the expression expr, the result of an EvaluatePacket evaluation.
$Pre
(Built-in Mathematica Symbol) $Pre is a global variable whose value, if set, is applied to every input expression.
ReturnTextPacket[string] is a MathLink packet containing string, the result of an EnterTextPacket evaluation.
EnterTextPacket[string] is a MathLink packet that requests the parsing and evaluation of string as an expression.
Hold
(Built-in Mathematica Symbol) Hold[expr] maintains expr in an unevaluated form.