https://code.studioinfinity.org/glen/teapot-spreadsheet
Teapot User Guide
Abstract:
For ages, spreadsheet programs have been closely associated with financial
calculations done by typical end-users. But time has shown that there
is also hacker's work which can be done with them, like calculate
monitor timings for various resolutions, or produce convincing time
statistics which justify the lack of documentation or the need for
a budget increase to your employer. The first part of this user guide
explains how the various operations of TEAPOT are used, whereas
the second part gives an introduction to spreadsheets and explains
the expression evaluator and its functions and operators.
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