lines - rows and columns used for display
lines handles Scilab display paging.
lines() returns the vector [# columns, # rows] currently used by Scilab for displaying the results.
lines(nl) sets the number of displayed lines (before user is asked for more) to nl.
lines(0) disables vertical paging
lines(nl,nc) changes also the size of the output to nc columns.
When Scilab is launched without -nw option, the lines parameters are automatically set according to the output window size, these parameters are also automaticaly modified when the window is resized.