This table is used both as an input and output by the main program. The table
Parameters relative to the absorption lines
For each of them requests are:
column density, b parameter, observed central position (Å), atomic transition.
In output, the program will write in this table, for each absorption line, the velocity of the corresponding cloud relative to the source and its redshift (relative to the observer).
A template of this table can be found in MID_CLOUD:ABSC.TBL