DisplayAllSteps is an option to Animate and related functions that specifies whether all frames should be displayed in an animation, even if to do so would slow the animation ...
Expression is a symbol that represents an ordinary Mathematica expression in Read and related functions.
LinkProtocol is an option to LinkLaunch, Install, and related functions that specifies the underlying data transport protocol to use for a new MathLink link.
Modal
(Built-in Mathematica Symbol) Modal is an option to functions such as CreateDialog that specifies whether the dialog that is created should be modal to the Mathematica front end.
MousePosition[] gives the current mouse position in the notebook front end. MousePosition["coords"] gives the mouse position with respect to the specified coordinate ...
NullWords is an option for Read and related functions which specifies whether null words should be taken to exist between repeated word separators.
Numerator[expr] gives the numerator of expr.
PolynomialRemainder[p, q, x] gives the remainder from dividing p by q, treated as polynomials in x.
RefreshRate is an option to Animate and related functions which specifies the refresh rate for frames in animations.
SawtoothWave[x] gives a sawtooth wave that varies from 0 to 1 with unit period.SawtoothWave[{min, max}, x] gives a sawtooth wave that varies from min to max with unit period.