InfixNotation[op, func] forces the box structure op to be treated as an infix operator representing the function func in input and output.

file.m is a Mathematica package file.

Mathematica options starts the full Mathematica system including notebook interface on Windows and Mac.

BoxBaselineShift is an option for AdjustmentBox that specifies how much the baseline of the box should be shifted relative to those of neighboring characters.

CellBracketOptions -> {opt_1 -> val_1, opt_2 -> val_2, ...} is an option for cells that specifies settings for cell brackets.

CheckAbort[expr, failexpr] evaluates expr, returning failexpr if an abort occurs.

ColumnAlignments is an option for the low-level function GridBox that specifies how entries in each column should be aligned.

ColumnLines is an option for the low-level function GridBox which specifies whether lines should be drawn between adjacent columns.

ColumnsEqual is an option for the low-level function GridBox which specifies whether all columns in the grid should be assigned equal width.

ColumnSpacings is an option for the low-level function GridBox which specifies the spaces in ems that should be inserted between adjacent columns.