System parameters in SURVO.APU:
1 = ep4, llength, lname ('fixed' parameters for edit field control)
2 = ed1, ed2, ed3 (size of the edit field)
3 = er3, ec3 (size of the Survo main window)
4 = speclist, specmax (space for extra specifications)
5 = edisk, tempdisk, ...(paths for data and temporary files)
6 = qpath, sucropath, measures (various paths)
7 = eout (output file for results of Survo operations)
8 = printer, ... (printers and drivers)
9 = scale_check, accuracy, results (control of statistical operations)
A = insert_type, ... (control of insert mode)
B = videomode (logical size of graphics windows)
C = autosave, autotrim (automatic saving, automatic text trimming)
D = Macros
E = Shadow characters
F = alarm (setting alarm)
G = start_sucro (sucro starting the Survo session)
H = crt_palette (colors in screen graphics)