notice: notice data channels
Notice data channels.(See also ignore.)
Syntax: notice<range1> <range2> ... <rangeN>
notice all
where
<rangeI> =:: <spectrum range>: <channel range> | <channel range>.
If no <spectrum range> is given, then the previous range is used (the initial default range is file one (1) only). The form of <spectrum range> is
<spectrum range> =::<init spectrum> – <last spectrum> | <spectrum>
where <init spectrum>, <last spectrum>, and <spectrum> are spectrum numbers, in the order that they were input with the data command. The form of channel range is
<channel range> =:: <initial channel> — <last channel> | <channel>
If <channel range> are integers then channels will be used or if reals then energies (or wavelengths if setplot wave has beenspecified). If only the last channel is indicated, then a default value of 1 is used for the initial channel. Channels remain noticed until they are explicitly ignored with the ignore command. When a spectrum is replaced by another spectrum, all input channels automatically are noticed.
XSPEC12> notice all
resets all the channels to ‘noticed’.
Assume that 4 spectra have been read in, the first 2 having 100 channels and the last 2 having 50 channels.Assume also that channels 1–10 of all four spectra are ignored and that channels 80–100 of spectra 1 and 2 are ignored.
In XSPEC12, notice does not force the detector response to be reread (see RESPONSE DESCRIPTION).
XSPEC12> notice **:1—10
//The first 10 channels of all 4 spectra are noticed.
XSPEC12> notice 80—**
//an attempt will be made to notice channels 
in all 4 spectra
// (as that was the last spectrum range specified) but the result is that
// only channels 80–100 will be noticed for spectra 1 and 2, with no
// change for spectra 3 and 4 as they have no channels greater than 50.
XSPEC12> notice 1:1—5
//No channels are noticed, as these channels were noticed
//in the beginning.