A spreadsheet editor.

Nebu is a graphical spreadsheet editor for the Varvara system, designed to handle csv/tsv files. Math operations are done by specifying a rectangle range of cells, followed by an operator. A range uses the colon character between two cell identifiers. A cell does at most one operation, and the range must precede the cell and may not include itself recursively.

A5:C7*

There are four basic arithmetic operator + - * /, as well as # to get the number of non-empty cells in a range, and " to concatenate strings. If an operator is not specified, it will default to returning the sum.

• Source, Uxntal
• 32-bit fixed point code, by eiríkr åsheim