### LINE

The LINE ASSOCIATED ARRAY is an integer array of 0 or 1 indicating if the RY channels are in (1) or out (0) a spectral line, i.e. in signal or noise windows. This array is intended to be used by the command BASE in order to exclude the given channels. Here is the specific integration in CLASS:

- if SET WINDOW is invoked with the option /ASSOCIATED, the command BASE will ignore the channels where the LINE array is 1. The usual windows (defined by their min-max range) are not used in this context. As a result, the element R%HEAD%CAL%NWIND is set to -1 (code for “ASSOCIATED ARRAY LINE was used”) in the baseline section.
- if SET WINDOW is invoked with the argument AUTO (i.e. take windows from data), and if the element R%HEAD%CAL%NWIND is -1, the LINE ASSOCIATED ARRAY will be used by the command BASE.
- SHOW WINDOW will display a specific message if the current SET WINDOW tuning refers to the ASSOCIATED ARRAY LINE.
- DRAW WINDOW will plot the ASSOCIATED ARRAY LINE if the current SET WINDOW tuning refers to the ASSOCIATED ARRAY LINE.