Flowcal (Something like a 1-D spreadsheet)

In the textarea, type a series of maths expressions, using (()) to refer to the previous line's result. Clicking outside the box (losing focus) will cause the contents to be re-evaluated, with the results from each previous line infilling (()).
Errors are reported in the javascript: console

Tested with Netscape 4.51
(c)1999 Tim Baverstock