org: The spreadsheet

 
 3.5 The spreadsheet
 ===================
 
 The table editor makes use of the Emacs ‘calc’ package to implement
 spreadsheet-like capabilities.  It can also evaluate Emacs Lisp forms to
 derive fields from other fields.  While fully featured, Org’s
 implementation is not identical to other spreadsheets.  For example, Org
 knows the concept of a _column formula_ that will be applied to all
 non-header fields in a column without having to copy the formula to each
 relevant field.  There is also a formula debugger, and a formula editor
 with features for highlighting fields in the table corresponding to the
 references at the point in the formula, moving these references by arrow
 keys
 

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