The names of built-in functions follow some general guidelines. The main expression or object on which a built-in function acts is usually given as the first argument to the ...
Button
(Built-in Mathematica Symbol) Button[label, action] represents a button that is labeled with label, and evaluates action whenever it is clicked.
MultipleListPlot is replaced by ListPlot and ListLinePlot, which now accept multiple sets of data. Dashing[{Dot,Dash,LongDash}] is replaced with ...
AiryBiPrime[z] gives the derivative of the Airy function Bi^\[Prime] (z).
Erf
(Built-in Mathematica Symbol) Erf[z] gives the error function erf(z). Erf[z_0, z_1] gives the generalized error function erf(z_1) - erf(z_0).
ExpIntegralEi[z] gives the exponential integral function Ei(z).
FactorInteger[n] gives a list of the prime factors of the integer n, together with their exponents. FactorInteger[n, k] does partial factorization, pulling out at most k ...
FixedPointList[f, expr] generates a list giving the results of applying f repeatedly, starting with expr, until the results no longer change.
Floor
(Built-in Mathematica Symbol) Floor[x] gives the greatest integer less than or equal to x. Floor[x, a] gives the greatest multiple of a less than or equal to x.
FractionalPart[x] gives the fractional part of x.