The term 'spreadsheet command' refers to a set of instructions that can be used to manipulate data in a spreadsheet. Two of the most commonly used commands are SORT and SORTDATA. The SORT command is used to arrange data in a spreadsheet according to a specified criteria, such as alphabetical order or numerical order. The SORTDATA command is used to SORT data in a spreadsheet by multiple criteria, such as sorting by date, name, or other criteria. Both commands are useful for organizing data in a spreadsheet and making it easier to analyze.