Attributes[symbol] gives the list of attributes for a symbol.

Typical command-line options for Mathematica executables. If the Mathematica front end is called with a notebook file as a command-line argument, then this notebook will be ...

expr_1; expr_2; ... evaluates the expr_i in turn, giving the last one as the result.

Hold[expr] maintains expr in an unevaluated form.

Mathematica can represent not only data and programs, but also the execution history of programs, as symbolic expressions—which can be displayed, manipulated, and analyzed ...

For[start, test, incr, body] executes start, then repeatedly evaluates body and incr until test fails to give True.

ScheduledTasks[] returns a list of ScheduledTaskObject expressions that represent current tasks.

StartScheduledTask[obj] starts the task represented by obj.

RunScheduledTask[expr] schedules and starts a task that will repeatedly evaluate expr once per second.RunScheduledTask[expr, time] schedules and starts a task that will ...

$ScheduledTask returns the current ScheduledTaskObject.