Parameters for sumspec
continuum removal. These are only used if
sumspec.cont_remove
is `subtract`, `divide`, or `zerodiv`.
The following parameters may be modified:

**c_interactive** no
- Fit continuum interactively (yes or no). If yes, a
graph of the spectrum
and the continuum fit is plotted to stdgraph, with rejected points flagged.
The program waits until one of the following keys is typed:
**q** accept the fit and continue the main task,
**?** print options,
**d** delete pointnearest to cursor,
**u** undelete point nearest to cursor,
**f** refit and redraw the data.

**c_sample** "*"
- Sample of points to use in fit. "*" = all.
**c_function** spline3
- Continuum fitting function (spline3 or legendre or chebyshev or spline1)
**naverage** 1
- Number of points in sample averaging
**order** 1
- Order of fitting function
**s_low_reject** 2.
- Input spectrum continuum fit minimum acceptance limit in sigma of fit
**s_high_reject** 2.
- Input spectrum continuum fit maximum acceptance limit in sigma of fit
**t_low_reject** 2.
- Output spectrum continuum fit minimum acceptance limit in sigma of fit
**t_high_reject** 2.
- Output spectrum continuum fit maximum acceptance limit in sigma of fit
**niterate** 10
- Number of rejection iterations
**grow** 1.
- Rejection growing radius

#### Last updated 1 May 2001

[**rvsao**]
[**sumspec**]