Gridlines

Gridlines are commonplace in business there used to make graphs or columns.

filling

is an option for listplot, plot, plot3D and related functions which specifies what filling to add under points, curves and surface.

fill handle

the fill handle is very useful for creating lists of consecutives dates.

descending order

Arranged from largest to smallest. decreasing

cell reference

a cell adress in a sreadsheet, such as Excel, it identifies the location in the sheet.

ascending order

The order in how information is sorted or arranged, from lowest to highest.

active cell

a cell in a spreadsheet that is open for data manipulation.